Faculty Profiles - WADA Chikamune

Other Link： http://id.ndl.go.jp/bib/034049756

Musculoskeletal simulation for patient transfer using hand load measurement device Reviewed International journal

Ryo Uchimura, Ryohei Fushitani, Kodai Kitagawa, Chikamune Wada

International Journal of Research in Orthopaedics 11 ( 1 ) 1 - 5 2025.01

Estimation of arteriovenous fistula function from shunt sound spectrogram images using a body-conducted sound sensor and a convolutional neural network Reviewed

Iryou kikigaku (The Japanese journal of medical instrumentation) ( Japanese Society of Medical Instrumentation ) 95 ( 1 ) 30 - 36 2025.01

Comparison of a Knee Orthosis Developed for Knee Osteoarthritis with Existing Orthoses: Wearing Pressure and Subjective Assessment Reviewed

YAMAMOTO Hiroaki, ENDO Masahide, BABA Tomohiro, HASHIMOTO Masashi, WADA Chikamune

Rigakuryoho Kagaku ( The Society of Physical Therapy Science ) 40 ( 1 ) 42 - 46 2025.01

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

[Purpose] We compared a knee orthosis developed with a focus on fitting pressure with the orthoses of patients with knee osteoarthritis, to examine whether the fitting pressure increased or not, and to compare the patients’ subjective evaluations of the two orthoses. [Participants and Methods] The subjects were 20 patients (8 males and 12 females) with knee osteoarthritis. First, we measured the pressure when the newly developed orthosis was worn and compared it with the pressure when the existing orthosis was worn. Then the patients reported their subjective evaluations of the difficulty of wearing, breathability, appearance, weight and wearing feeling of their existing orthosis and the newly developed orthosis on a Visual Analogue Scale. [Results] There was a significant difference in the pressure applied between the existing and newly developed orthoses. There were no significant differences in the patients’ subjective evaluations. [Conclusion] The pressure applied for the newly developed orthosis could be set higher than that of patients’ existing orthoses, but there were no differences in the patients’ subjective evaluations.

DOI： 10.1589/rika.40.42

Other Link： https://www.jstage.jst.go.jp/article/rika/40/1/40_42/_pdf

Evaluation of a system for measuring forces acting on the hand in assisting movements International journal

Ryo Uchimura, Ryohei Fushitani, Kodai Kitagawa, Chikamune Wada

12th International Symposium on Applied Engineering and Sciences (SAES2024) 172 2024.11

Improved YOLOv8 for Assistive System for the Visually Impaired International journal

Ryo Uchimura, Ryohei Fushitani, Kodai Kitagawa, Chikamune Wada

12th International Symposium on Applied Engineering and Sciences (SAES2024) 24 2024.11

Meal Guidance System for Visually Impaired People Reviewed International journal

Hitunthakingpunt K., Wada C.

2024 Joint 13th International Conference on Soft Computing and Intelligent Systems and 25th International Symposium on Advanced Intelligent Systems, SCIS and ISIS 2024 2024.11

Fundamental Study on Muscle Activity in Running with SoftKnee Brace Reviewed International journal

Kodai Kitagawa, Tomoya Murakami, Chikamune Wada, Hiroaki Yamamoto

18th International collaboration Symposium on Information, Production and Systems (ISIPS2024) P1(2pages) 2024.11

Effect of Soft Knee Brace on Shank Movement in Running Reviewed International journal

Kodai Kitagawa, Tomoya Murakami, Chikamune Wada, Hiroaki Yamamoto

Journal of Prosthetics Orthotics and Science Technology 3 ( 2 ) 42 - 47 2024.11

Vertebral Force Prediction during Manual Lifting using Sagittal Plane Posture and Machine Learning Reviewed International journal

Kitagawa K., Hida M., Wada C., Yamamoto H.

GCCE 2024 - 2024 IEEE 13th Global Conference on Consumer Electronics 952 - 953 2024.10

Evaluating YOLOv8 model With Out-of-distribution dataset and shape bias Reviewed International journal

Eto S., Wada Y., Wada C.

GCCE 2024 - 2024 IEEE 13th Global Conference on Consumer Electronics 648 - 649 2024.10

Feature Selection via Decision Tree in Foot Position Recognition during Patient Transfer using Smartphone Inertial Sensor Reviewed International journal

Kodai Kitagawa, Ryo Takashima, Tadateru Kurosawa, Chikamune Wada

SICE Festival 2024 with Annual Conference (SICE2024) WeBT11.21 2024.08

Effects of electrical stimulation of antagonist muscles on shoulder joint adduction force and grip strength Reviewed International journal

Nakano Sota, Okada Hirotaka, Nakamura Kouichi, Kitagawa Kodai, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 36 ( 7 ) 378 - 381 2024.07

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

[Purpose] This study aimed to determine whether applying electrical stimulation to the deltoid and extensor digitorum muscles could lead to a reduction in fixation force during shoulder joint adduction and grip strength. [Participants and Methods] Fifteen healthy adult males participated in this study. In the shoulder adduction force experiment, the middle fibers of the deltoid muscle of the dominant arm were electrically stimulated. In the grip strength experiment, the extensor digitorum muscle of the dominant arm was electrically stimulated. The forces exerted with and without the electrical stimulation were measured. [Results] The torque of the shoulder adduction force decreased significantly with electrical stimulation, while no significant change was observed in normalized grip strength with electrical stimulation. [Conclusion] The response of antagonist muscles to electrical stimulation varied according to location.

DOI： 10.1589/jpts.36.378

Other Link： https://www.jstage.jst.go.jp/article/jpts/36/7/36_2024-018/_pdf

Inducing unstable walking conditions through visual and auditory stimuli Reviewed International journal

Tomomasa Ohara, Chong Yu Zheng(UTAR), Shinji Murata, Chikamune Wada

J. Phys. Ther. Sci. 36 330 - 336 2024.06

Foot Position Recognition Using a Smartphone Inertial Sensor in Patient Transfer Reviewed International journal

Kodai Kitagawa, Ryo Takashima, Tadateru Kurosawa, Chikamune Wada

BioMed 4 ( 2 ) 112 - 121 2024.04

Human Detection and Human Pose Classification for Mobile Robots Interaction Reviewed International journal

K. Hirunthakingpunt, D. Dawan, C. Wada, N. Maneerung

2024 1st International Conference on Robotics, Engineering, Science, and Technology (RESTCON) 1 - 6 2024.02

Enhancing Bus Number Detection Efficiency with Transfer Learning and Fine-Tuned Optical Character Recognition Reviewed International journal

R. Arifando, S. Eto, C. Wada

2024 1st International Conference on Robotics, Engineering, Science, and Technology (RESTCON) 106 - 111 2024.02

Deciphering pixel insights: A deep dive into deep learning strategies for enhanced indoor depth estimation Reviewed International journal

Krisna Pinasthika, Fitri Utaminingrum(Brawijaya Univ), Chih‑Yang Lin, Chikamune Wada, Timothy K. Shih

International Journal of Information Management Data Insights 4 ( 1 ) 2024.02

Foot Clearance Prediction using Wrist Acceleration and Gait Speed Reviewed International journal

Kodai Kitagawa, Chikamune Wada, Nobuyuki Toya

Journal of Electronics, Electromedical Engineering, and Medical Informatics 6 ( 1 ) 32 - 39 2024.01

Convolutional Neural Network Based Zebra Crossing and Pedestrian Traffic Light Recognition Reviewed International journal

Shinji Eto, Yasuhiro Wada, Chikamune Wada

Journal of Mechanical and Electrical Intelligent System 6 ( 3 ) 1 - 11 2023.12

Investigation of factors influencing low physical activity levels in community-dwelling older adults with chronic pain: a cross-sectional study Reviewed International journal

Hida M., Imai R., Nakamura M., Nakao H., Kitagawa K., Wada C., Eto S., Takeda M., Imaoka M.

Scientific Reports 13 ( 1 ) 2023.12

Preliminary Study of Stereophonic Sound-based Electric Travel Aid for the Visually Impaired Reviewed International journal

Shinji Eto, Hinami Sakai Wada, Chikamune Wada

11th International Symposium on Applied Engineering and Sciences (SAES2023) ID229 2023.11

Induction of unstable walk using visual stimulation Reviewed International journal

Tomomasa Ohara, Chong Yu Zheng(UTAR), Chikamune Wada

11th International Symposium on Applied Engineering and Sciences (SAES2023) ID195 2023.11

Effects of Foot Placements on Lumbar Loads in Patient Transfer Motion: Comparison Between Anteroposterior and Mediolateral Placements Reviewed International journal

Kodai Kitagawa, Hayato Nodagashira, Tadateru Kurosawa, Hinako Maeyama, Chikamune Wada

2023 IEEE 12th Global Conference on Consumer Electronics (IEEE GCCE 2023) 257 - 258 2023.10

Comparison of Regression Models for Foot Position Prediction during Patient Lifting Motion using a Single Inertial Sensor Reviewed International journal

Kodai Kitagawa, Chikamune Wada, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu

SICE Annual Conference 2023 (SICE2023) FrPOS2.19 2023.09

Staggering Gait Detection Method using Wrist Acceleration Reviewed International journal

Nobuyuki Toya, Kodai Kitagawa, Chikamune Wada

2023 45th Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC2023) No.2549 2023.08

Development of a Robotic Hand Glove System for Secure Grasp with AI Wireless Sensor Data Reviewed

Almassri A., Koyanagi K., Wada C., Horio K., Hasan W.Z.W.(UPM)

2023 IEEE International Conference on Mechatronics and Automation, ICMA 2023 669 - 674 2023.08

Effect of knee orthosis on joint angle of osteoarthritis patients during standing motion: Comparison with different wearing pressures Reviewed

YAMAMOTO Hiroaki, OKAMATSU Shogo, KITAGAWA Kodai, WADA Chikamune

Bulletin of the Japanese Society of Prosthetics and Orthotics ( Japanese Society of Prosthetics and Orthotics ) 39 ( 3 ) 219 - 224 2023.07

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

We investigated the influence of wearing pressure from flexible knee orthosis on the sit-to-stand motion of patients with knee osteoarthritis. The subjects were seven patients with osteoarthritis of the knee. Knee joint flexion angle was analyzed when the sit-to-stand motion was performed by the subject wearing flexible knee orthosis with three different wearing pressures. High wearing pressure caused a significantly larger knee flexion angle compared to that when wearing no orthosis. The knee joint flexion angle increased with increasing wearing pressure. The knee joint flexion angle at the time of sit-to-stand motion increased with the increased wearing pressure of the flexible knee orthosis.

DOI： 10.11267/jspo.39.219

Method for improving GPS high-positioning using microwave absorbers for walking movement support Reviewed International journal

Takashi ASAKAWA, Haruka MATOBA, Daiki HORIMOTO, Chikamune WADA

Mechanical Engineering Letters ( The Japan Society of Mechanical Engineers ) 9 ( 0 ) 23-00125 - 23-00125 23-00125 2023.05

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

This paper describes a method to eliminate multipath effects by using the shield cover of a microwave absorber to improve Global Positioning System (GPS) positioning accuracy. We studied a walking movement support system for visually impaired people. The system provides audio guidance regarding the direction of movement and pedestrian signals based on the location of the intersection and the pedestrian’s GPS position. Because a pedestrian device is a wearable terminal, we want to obtain highly accurate location information with a simple mechanism that can be comfortably worn on the body. In this study, we propose a method using a shielding cover with a microwave absorber to improve the GPS positioning accuracy in environments where multipath, a major cause of positioning error, occurs. This method does not require any modification to the hardware or software of the GPS receiver, and the multipath is prevented by adjusting only the height and position of the shielding cover. In a walking experiment using the proposed method, we confirmed that the shielding plate, set at an open angle of 90 degrees, can provide positioning without being affected by multipath in an environment where there are buildings on both sides of the path.

DOI： 10.1299/mel.23-00125

Other Link： https://www.jstage.jst.go.jp/article/mel/9/0/9_23-00125/_pdf

Development of Hallux Valgus Classification Using Digital Foot Images with Machine Learning Reviewed International journal

Mitsumasa Hida, Shinji Eto, Chikamune Wada, Kodai Kitagawa, Masakazu Imaoka, Misa Nakamura, Ryota Imai, Takanari Kubo, Takao Inoue, Keiko Sakai, Junya Orui, Fumie Tazaki, Masatoshi Takeda, Ayuna Hasegawa, Kota Yamasaka, Hidetoshi Nakao

Life 2023 13 ( 5 ) 1146 2023.05

Improved YOLOv5-Based Lightweight Object Detection Algorithm for People with Visual Impairment to Detect Buses Reviewed International journal

Rio Arifando, Shinji Eto, Chikamune Wada

Appl. Sci. 2023 13 ( 9 ) 5802 2023.05

Compressive and Shear Forces of L5/S1 during Patient Transfer in Different Loads on Hands Reviewed International journal

Kodai Kitagawa, Hayato Nodagashira, Tadateru Kurosawa, Hinako Maeyama, Chikamune Wada

International Journal of Pharma Medicine and Biological Sciences 12 ( 2 ) 21 - 25 2023.04

Orientation-based classification of sit-to-stand activity using Artificial Neural Network in real-time Reviewed International journal

Romy Budhi Widodo, Hanfrey Djaya Winataharto, Mochamad Subianto, Rudy Setiawan, Joseph Dedy Irawan, Chikamune Wada

World Journal of Advanced Research and Reviews 17 ( 3 ) 307 - 317 2023.03

感覚取り入れ型課題遂行時におけるフロー状態と自律神経系活動 Reviewed

倉岡宏幸,和田親宗,三宅晋司

産業保健人間工学 23 ( 1 ) 15 - 24 2023.02

Improvement of Physical Activity Estimation Using the Inertial Measurement Unit based Cane Measurement Device Reviewed International journal

Takanori Yoshida, Chikamune Wada

Journal of Mechanical and Electrical Intelligent System 6 ( 1 ) 31 - 44 2023.01

Improving Fall Detection Devices for Older Adults Using Quality Function Deployment (QFD) Approach Reviewed International journal

Kawthar Abdul Rahman, Siti Anom Ahmad(UPM), Azura Che Soh, Asmidawati Ashari, Chikamune Wada, Alpha Agape Gopalai

Gerontology and Geriatric Medicine 9 1 - 10 2023.01

Effects of Foot Placements on Lumbar Loads in Patient Transfer Motion: Comparison between Anteroposterior and Mediolateral Placements Reviewed

Kitagawa K., Nodagashira H., Kurosawa T., Maeyama H., Wada C.

GCCE 2023 - 2023 IEEE 12th Global Conference on Consumer Electronics 255 - 256 2023.01

Night-time Validity Evaluation of Neural Network Model for Assisting Visually Impaired Reviewed International journal

Shinji Eto, Yasuhiro Wada, Chikamune Wada

10th International Symposium on Applied Engineering and Sciences paper ID: C20 2022.12

Performance Analysis of YOLOv5 Versions for Bus Detection System to Assist Visually Impaired People in Waiting for The Bus Reviewed International journal

Rio Arifando, Chikamune Wada

10th International Symposium on Applied Engineering and Sciences paper ID: B14 2022.12

Study of wobble induction using VR glasses Reviewed International journal

Tomomasa Ohara, Chikamune Wada

10th International Symposium on Applied Engineering and Sciences paper ID: C000164 2022.12

IMU-based activity recognition of a spinal orthosis user Reviewed International journal

Takanori Yoshida, Mizuho Ogata, Sonoda Ren, Yuji Katae, Chikamune Wada

10th International Symposium on Applied Engineering and Sciences paper ID: C000112 2022.12

Artificial Neural Network for Prediction of Vertebral Force during Manual Lifting using 2D Digital Image Reviewed International journal

Kodai Kitagawa, Chikamune Wada, Mitsumasa Hida, Hiroaki Yamamoto

10th International Symposium on Applied Engineering and Sciences paper ID: C000007 2022.12

Combination of Gradient Boosting and Gaussian Process for Foot Placement Prediction using Wearable Sensors Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

10th International Symposium on Applied Engineering and Sciences paper ID: C000020 2022.12

Foot Placement and Arm Movement Combination while Turning Patients to Prevent Lower Back Pain Reviewed International journal

Kodai Kitagawa, Koji Matsumoto, Hayato Nodagashira, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

International Journal of Human Movement and Sports Sciences 10 ( 5 ) 1060 - 1066 2022.10

Fall and Balance Detection System for Older Persons using Blynk Application Reviewed International journal

Shalini Murugasen, Siti Anom Ahmad, Kawthar Abdul Rahman, Azura Che Soh, Asmidawati Ashari, Chikamune Wada, Alpha Agape Gopalai

The National Conference on Ageing 2022 27 - 28 2022.10

A survey of physical and occupational therapists’ views on lumbar loading movements Reviewed International journal

Zenmyou Yuta, Kawakami Kei, Goto Masaki, Watanabe Kazuya, Okamoto Nobuhiro, Yoshida Mariko, Yamamoto Hiroaki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 34 ( 10 ) 683 - 688 2022.10

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

[Purpose] To identify the lumbar loading movements necessary in clinical practice. [Participants and Methods] A questionnaire survey was conducted among physical and occupational therapists in Japan. There were no exclusion criteria regarding the number of years of experience, age, or field of employment. The participants were randomly selected and administered the questionnaire. They were asked to list and rank the lumbar loadings they considered necessary. [Results] A total of 739 respondents participated in the survey. The results of this nationwide survey indicated that the lifting movement of heavy objects in the trunk flexion position was the most common movement (for 354 participants). [Conclusion] The main loading movements of the lumbar spine were reported to be heavy lifting movements (in the trunk flexion position) and trunk rotation movements. As perspectives, we aim to conduct an analytical study of some of lumbar spine loading movements outlined in this study, using a musculoskeletal simulator and electromyography.

DOI： 10.1589/jpts.34.683

Other Link： https://www.jstage.jst.go.jp/article/jpts/34/10/34_2022-048/_pdf

Selection and Evaluation of Appropriate Assist Force for Standing and Sitting Motion Assist Devices Using Residual Function Reviewed

Mikami Hayato, Tsuchiya Yoshio, Tanaka Takayuki, Wada Chikamune

The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers ) 10 ( 2 ) 82 - 89 2022.09

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

Supporting the elderly by utilizing their remaining functions will lead to the extension of their healthy life span. In this study, we developed a portable cane-type standing and sitting positional mobility support device. In this study, we developed a cane-type mobility support device, and selected a suitable support direction for elderly people by dynamic analysis simulation. In addition, the necessary assisting force for the elderly was examined and the assisting force was set. The effectiveness of the device was evaluated by measuring the surface electromyogram of healthy subjects. As a result, it was found that the specifications of this device were effective when the assist direction was 30 degrees and the assist force was 110 N. From the measurement of the surface electromyogram, it was found that the device was effective for both standing and sitting motions. It also helps to ensure the safety of the sitting motion of elderly people.

DOI： 10.12792/jjiiae.10.2.82

Effect of Knee Orthosis on Lateral Thrust in Patients with Knee Osteoarthritis Reviewed International journal

Yamamoto H., Endo M., Baba T., Wada C.

Advances in Science, Technology and Engineering Systems Journal 7 ( 5 ) 41 - 45 2022.09

Effect of knee orthosis on joint position sense in patients with osteoarthritis of the knee -Analysis focusing on the wearing pressure of the orthosis- Reviewed

YAMAMOTO Hiroaki, OKAMATSU Shogo, KITAGAWA Kodai, WADA Chikamune

Rehabilitation Engineering ( Rehabilitation Engineering Society of JAPAN (RESJA) ) 37 ( 2 ) 91 - 96 2022.05

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

In patients with knee osteoarthritis, wearing a knee orthosis improves joint positioning. However, no attention has been paid to the wearing pressure, which indicates the tightness of the hook and loop fastener. The neurophysiological effects of local compression have been obtained by wearing the device. Therefore, increasing the wearing pressure may further improve the sense of joint positioning. In this study, we focused on the wearing pressure of the knee orthosis and examined its effect on joint position perception. The results showed that High Pressure was significantly lower in 60°of knee joint flexion than in Control (p<0.05). It was suggested that increasing the wearing pressure of the flexible knee orthosis may improve the sense of joint positioning.

DOI： 10.24691/resja.37.2_91

Other Link： https://search.jamas.or.jp/link/ui/2022258612

Identification of the cause of fall during the pre-impact fall period Reviewed International journal

Sasaki Sho, Yamamoto Hiroaki, Kitagawa Kodai, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 34 ( 4 ) 320 - 326 2022.04

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

[Purpose] This study aimed to develop and validate a method for identifying factors that may cause a fall during the pre-impact fall period using wearable sensors. [Participants and Methods] The participants were 23 young people from the public data set (mean age, 23.4 years). Acceleration and angular velocity information obtained from sensors attached to the participant’s waist was used to generate the pre-impact fall. The cause of the fall (slip, trip, fainting, get up, sit down) was then classified with and without the addition of activity of daily living data using three different support vector machine. In addition, we investigated the influence of lead time (0–2.0s) on accuracy. [Results] The quadratic and cubic support vector machine identified the activity of daily living and fall patterns more accurately than the linear support vector machine, and the cubic support vector machine was better for classification, although the difference was slight. The greatest accuracy for predicting the cause of the fall (87.9%) was obtained when the cubic support vector machine was used, activity of daily living was factored into the analysis, and the lead time was 0.25 sec. [Conclusion] Support vector machine can identify the cause of the fall during the pre-impact fall period. Appropriate individualized interventions may be designed based on the most likely cause of fall as identified by this analysis method.

DOI： 10.1589/jpts.34.320

Other Link： https://search.jamas.or.jp/link/ui/2022326094

Examination of knee orthosis for knee osteoarthritis using gait analysis Reviewed International journal

Hiroaki Yamamoto, Masahide Endo, Tomohiro Baba, Chikamune Wada

2022 IEEE 4th Global Conference on Life Sciences and Technologies (IEEE LifeTech2022) 617 - 619 2022.03

Automatic Gait Classification using Arm Acceleration based on Stature and Gait Speed Reviewed International journal

Kitagawa K., Wada C., Toya N.

LifeTech 2022 - 2022 IEEE 4th Global Conference on Life Sciences and Technologies 636 - 637 2022.03

聴覚障害者や難聴者の方々の胃部Ｘ線検査受診における胃部Ｘ線検査支援システムの有用性について Reviewed

宮田充, 和田親宗, 小林俊哉

日本診療放射線技師会誌 69 ( 832 ) 22 - 29 2022.02

Effect of Knee Orthosis Pressure Variation on Muscle Activities during Sit-to-Stand Motion in Patients with Knee Osteoarthritis Invited Reviewed International journal

Yamamoto H., Okamatsu S., Kitagawa K., Wada C.

International Journal of Environmental Research and Public Health 19 ( 3 ) 2022.02

Human Location Estimation using a Monocular Camera for the Support of the Visually Impaired Reviewed International journal

Takanori Yoshida, Ibai Gorordo Fernandez, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 213 2021.12

Measurement of gait parameters using a stereo camera Reviewed International journal

Ryoya Tanaka, Ibai Gorordo Fernandez, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 222 2021.12

Low-light image enhancement for camera-based assistive device of the visually impaired Reviewed International journal

Shinji Eto, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 485 2021.12

Study on Ground Reaction Force Estimation Using 2D Image Information Reviewed International journal

Kaoru Kinoshita, Shogo Okamatsu, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 230 2021.12

Development of standing-up support device to encourage the use of residual ability ~ Posture estimation when standing using seat pressure~ Reviewed International journal

Yudai Murakami, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 227 2021.12

Classification of Causes of Falls using Machine Learning in Pre-impact Fall State Reviewed International journal

Sho Sasaki, Hiroaki Yamamoto, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 224 2021.12

Tactile Tile Detection Method by RGB Channels Exchanging Reviewed International journal

Yuma Akinaga, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 225 2021.12

Transfer Learning-based Camera Viewpoint Identification for Assistive System to Bus-waiting Reviewed International journal

Hiroki Sugino, Ibai Gorordo Fernandez, Watcharin Tangsuksant, Kodai Kitagawa, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 625 2021.12

Remote vascular dilatation by nitric monoxide generated by acupuncture/moxibustion stimulation Reviewed International journal

Tetsuya Yoneda, Takeshi Yamakawa, Chikamune Wada

9th International Symposium on Applied Engineering and Sciences paper ID: 231 2021.12

立ち上がり動作における軟性膝装具の装着圧力の時間的変化 Reviewed

山本裕晃, 岡松将吾, 北川広大, 和田親宗

理学療法科学 36 859 - 863 2021.12

Modeling of the Vasorelaxation Mechanism by Acupuncture/Moxibustion Stimulation for Preventing Arteriosclerosis -Review Paper- Reviewed International journal

Tetsuya Yoneda, Takeshi Yamakawa, Chikamune Wada

International Journal of Innovative Computing, Information and Control ( ICIC International ) 17 ( 6 ) 1989 - 2017 2021.12

Foot Clearance Prediction Using Wrist Position: A Pilot Study Via Public Dataset Reviewed International journal

Kodai Kitagawa, Chikamune Wada, Nobuyuki Toya

43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society 5195 2021.11

Suitable Combination of Bed Height and Foot Position for Turning Patient on a Bed Reviewed International journal

Kodai Kitagawa, Kotaro Yamamoto, Chikamune Wada

43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society 5194 2021.11

Relationship between Wearing Pressure of Flexible Knee Orthosis and Muscle Activity during Standing-up: A Pilot Study for Knee Osteoarthritis Patient Reviewed International journal

Hiroaki Yamamoto, Shogo OKAMATSU, Kodai KITAGAWA, Chikamune WADA

The 18th International Society for Prosthetics and Orthotics 196 2021.11

Movement Guidance Device in Indoor Environment using Inertial Sensor Reviewed International journal

Haoran Wang, Ibai Gorordo Fernandez, Kodai Kitagawa, Chikamune Wada

15th International collaboration Symposium on Information, Production and Systems (ISIPS 2021) D2-4 2021.11

Study on Tactile Tile Detection Algorithm for Walking Guidance System on Nighttime Crosswalks Reviewed International journal

Shinji Eto, Chikamune Wada

15th International collaboration Symposium on Information, Production and Systems (ISIPS 2021) C2-1 2021.11

Comparison of Sensor Position for Abnormal Gait Detector using an Inertial Measurement Unit Reviewed International journal

Go Eto, Ibai Fernandez, Kodai Kitagawa, Siti Anom Ahmad, Chikamune Wada

15th International collaboration Symposium on Information, Production and Systems (ISIPS 2021) D1-4 2021.11

Evaluation of Spine Fixation via Spinal Orthosis during Picking-up Motion using Wearable Flex Sensor Reviewed International journal

Tatsuya Onishi, Ibai Gorordo Fernandez, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Takahito Oda, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

15th International collaboration Symposium on Information, Production and Systems (ISIPS 2021) D2-2 2021.11

Foot position measurement during assistive motion for sit-to-stand using a single inertial sensor and shoe-type force sensors Reviewed

Kitagawa K., Fernandez I.G., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

International Journal of Environmental Research and Public Health 18 ( 19 ) 2021.10

Comparison of Predictors to Estimate Lumbar Muscle Activity Using a Single Inertial Sensor During Patient Handling Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

2021 IEEE 10th Global Conference on Consumer Electronics 445 - 446 2021.10

Relationship between Foot Position and Lumbar Loads while Turning Patients on a Bed: An Investigation via Computational Simulation and Electromyography Reviewed International journal

Kitagawa K., Yamamoto K., Wada C.

International journal of online and biomedical engineering 17 ( 10 ) 131 - 143 2021.10

Knee joint angle sensing in healthy young adults using flexible orthosis with different wearing pressure Reviewed International journal

Yamamoto Hiroaki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 33 ( 7 ) 537 - 539 2021.07

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] To investigate the effects of a flexible brace, by analyzing whether its usage; the difference in wearing pressure could change the joint position sensation in healthy participants; and develop a flexible knee brace for patients with knee osteoarthritis. [Participants and Methods] The study included eight healthy males with 14 knee joints (mean age, 22.0 ± 3.1 years). To measure joint position sense, an “angle reproduction test” was performed in three experimental conditions: 1) participants not wearing the brace, 2) the brace was secured with an appropriate force, and 3) the brace was fully secured using hook-and-loop fasteners. [Results] No significant difference was observed among groups comprising of those not wearing, those wearing with the standard force, and those wearing with the tight force. When the maximum hook-and-loop fastener was squeezed, the sensory error in joint position was maximized at both 30° and 60° flexion. [Conclusion] Joint position sense improvement was confirmed to be poor by orthosis, and an error occurred in the joint position sense by increasing the wearing pressure in orthosis. In future, measurements should be performed on patients with knee osteoarthritis who have decreased joint position sense and verify the effect of different wearing pressures verified.

DOI： 10.1589/jpts.33.537

Other Link： https://ci.nii.ac.jp/naid/130008060077

Evaluation Of Wearable Flex Sensor For Spine Angle Measurement During Picking-Up Motion Reviewed International journal

Tatsuya Onishi, Ibai Gorordo Fernandez, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

17th IEEE-EMBS International Conference on Wearable and Implantable Body Sensor Networks ID736693 (1 page) 2021.07

Estimation Technique For Vertical Ground Reaction Force Using Inertial Sensor During Nursing Activity Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

17th IEEE-EMBS International Conference on Wearable and Implantable Body Sensor Networks ID733830 (1 page) 2021.07

Measurement Method for Erector Spinae Muscle Activity during Patient Handling Using Inertial Sensor and Shoe-type Force Sensor Reviewed

Kitagawa K., Matsumoto K., Iwanaga K., Ahmad S.A., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

International Journal of Electrical and Electronic Engineering and Telecommunications 10 ( 4 ) 283 - 287 2021.07

理学療法学科初年次学生の装具に関する認識　─計量テキスト分析による解析─ Reviewed

山本裕晃, 北川広大, 和田親宗

理学療法福岡 34 120 - 123 2021.05

Coronal Spinal Postural Alignment Screening Tool Using Markerless Digital Photography Reviewed International journal

Mitsumasa Hida, Ayuna Hasegawa, Sachiyo Kamitani, Yumi Kamitani, Kodai Kitagawa, Shogo Okamatsu, Seigo Minami, Tadasuke Ohnishi, Chikamune Wada

Advances in Science, Technology and Engineering Systems Journal 6 ( 2 ) 965 - 970 2021.04

Comparison of machine learning algorithms for patient handling recognition based on body mechanics Reviewed

Kitagawa K., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

LifeTech 2021 - 2021 IEEE 3rd Global Conference on Life Sciences and Technologies 77 - 79 2021.03

Walking cane velocity estimation using a velocity update method Reviewed

Fernandez I.G., Wada C., Ahmad S.A.

LifeTech 2021 - 2021 IEEE 3rd Global Conference on Life Sciences and Technologies 249 - 252 2021.03

理学療法学生が考える装具管理に必要な知識と技能 Reviewed

山本裕晃, 和田親宗

リハビリテーション教育研究 27 20 - 25 2021.03

The Association of Falls with Instability: An Analysis of Perceptions and Expectations toward the Use of Fall Detection Devices Among Older Adults in Malaysia Reviewed

Abdul Rahman K., Ahmad S.A., Che Soh A., Ashari A., Wada C., Gopalai A.A.

Frontiers in Public Health 9 2021.02

Comparison of Predictors to Estimate Lumbar Muscle Activity using a Single Inertial Sensor during Patient Handling Reviewed International journal

Kitagawa K., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021 402 - 403 2021.01

Temporal Changes in Wearing Pressure of Soft Knee Orthosis during Standing Up Reviewed

YAMAMOTO Hiroaki, OKAMATSU Shogo, KITAGAWA Kodai, WADA Chikamune

Rigakuryoho Kagaku ( The Society of Physical Therapy Science ) 36 ( 6 ) 859 - 863 2021.01

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

[Purpose] The wearing pressure of the soft knee orthosis does not change during operation, resulting in insufficient fixation. Therefore, a soft knee orthosis that dynamically changes the wearing pressure is required so that fixation is permanent during operation. In this study, for the development of such an orthosis, we investigated the temporal changes in the wearing pressure of a soft knee orthosis during the rising to stand motion. [Participants and Methods] The subjects were 18 healthy young men. We investigated the temporal changes in the wearing pressure during the standing up motion using soft knee orthoses with different wearing pressures. [Results] A significant difference was observed in the wearing pressure in each phase of the rising motion. The wearing pressure was the highest when the buttocks lifted off the bed. In addition, the wearing pressure tended to increase according to the knee flexion angle. [Conclusion] We were able to confirm the change in the wearing pressure of the soft knee orthosis and the index during the standing up motion. In the future, we will proceed with the development of flexible knee orthoses whose wearing pressure changes dynamically.

DOI： 10.1589/rika.36.859

Other Link： https://www.jstage.jst.go.jp/article/rika/36/6/36_859/_pdf

理学療法学科1年次生が装具に対して抱くイメージ

山本裕晃, 北川広大, 和田親宗

理学療法学Supplement ( 公益社団法人日本理学療法士協会 ) 48S1 ( 0 ) B-225_1 - B-225_1 2021.01

Development of a Wearable Human Fall Detection System Reviewed International journal

Azura Che Soh, Noor Ain Kamsani, Raja Mohd Kamil Raja Ahmad, Siti Anom Ahmad, Asnor Juraiza Ishak, Hafiz Rashidi Ramli Harun, Siti Khadijah Ali, Chikamune Wada

ASEAN IVO Forum 2020 Session4-1 2020.12

Step Length Estimation Based on Arm Accelerations for Wearable Fall Prevention Systems Reviewed

Kodai Kitagawa, Yu Taguchi, Chikamune Wada, Nobuyuki Toya

International Journal of Applied Biomedical Engineering 13 ( 2 ) 29 - 35 2020.12

Design and evaluation of upper-arm mouse using inertial sensor for human-computer interaction Reviewed

Widodo R.B., Haryasena A.B., Setiawan H., Tirma Irawan P.L., Subianto M., Wada C.

Journal of Engineering Science and Technology 15 ( 6 ) 3673 - 3690 2020.12

Linear Regression Technique for Improvement of Feet Position Estimation During Standing Balance Using a Cane with Millimeter Wave Radar Reviewed International journal

Ibai Gorordo Fernandez, Kodai Kitagawa, Kawthar Abdul Rahman, Azura Che Soh, Alpha Agape Gopalai, Siti Anom Ahmad, Chikamune Wada

Pertanika Journal of Science and Technology 28 ( S2 ) 71 - 81 2020.12

Regression Equation between Required Force and Lumbar Load of Caregiver in Supporting Standing-up Motion via Computational Musculoskeletal Simulation Reviewed International journal

Kodai Kitagawa, Yoshiki Nishisako, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

Pertanika Journal of Science and Technology 28 ( S2 ) 59 - 70 2020.12

A Pilot Study on Abnormal Gait Detector using an Inertial Sensor for Fall Prevention System Reviewed International journal

Go Eto, Ibai Gorordo Fernandez, Kodai Kitagawa, Siti Anom Ahmad, Chikamune Wada

8th International Symposium on Applied Engineering and Sciences E-P2-01 2020.12

Improving Fall Detection Device using Quality Function Deployment: Development of a Fall Prevention Device Reviewed International journal

Kawthar Abdul Rahman, Siti Anom Ahmad, Chikamune Wada

8th International Symposium on Applied Engineering and Sciences M-05-07 2020.12

Relationship between toe contact timing and motor function of the elderly people Reviewed International journal

Shogo Okamatsu, Kazuaki Tsuji, Kodai Kitagawa, Ibai Gorordo Fernandez, Mitsumasa Hida, Chikamune Wada

8th International Symposium on Applied Engineering and Sciences E-P4-11 2020.12

Blood flow volume estimation of dialysis patients using body sound sensor and machine learning Reviewed International journal

Takeshi Joyashiki, Chikamune Wada

8th International Symposium on Applied Engineering and Sciences E-P4-08 2020.12

A pilot study to investigate the effects of cane length on gait stability Reviewed International journal

Supanat Sakunwitunthai, Kodai Kitagawa, Ibai Gorordo Fernandez, Siti Anom Ahmad, Chikamune Wada,

8th International Symposium on Applied Engineering and Sciences E-P４-01 2020.12

Fundamental Study on Prediction Method for Muscle Activity of Caregivers using Inertial Sensor Reviewed International journal

Kodai Kitagawa, Koji Matsumoto, Kensuke Iwanaga, Siti Anom Ahmad, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

8th International Symposium on Applied Engineering and Sciences E-P3-01 2020.12

Estimation of Brachial Artery Vascular Resistance Index in Dialysis Patients via Vascular Access Using Body-conducted Sound Sensor (BCS) and Neural Network Reviewed International journal

Takeshi Joyashiki, Chikamune Wada

14th International collaboration Symposium on Information, Production and Systems D1-5 2020.11

The Relationship between Crutch Length and Shoulder Load during Double-Crutch Walking Reviewed International journal

Atsushi Tamura, Yoshiki Nishisako, Kodai Kitagawa,Takayuki Nagasaki, Shogo Okamatsu, Chikamune Wada

4th Global Conference on Biomedical Engineering 260167 2020.11

Real-time Camera Viewpoint Identification for Assistive System to Bus-waiting Visually Impaired Reviewed International journal

Hiroki Sugino, Watcharin Tangsuksant, Ibai Gorordo Fernandez, Kodai Kitagawa, Chikamune Wada

4th Global Conference on Biomedical Engineering 260162 2020.11

Automatic Identification Method of Patient Handling Motion using a Single Inertial Measurement Unit and Machine Learning Reviewed International journal

Kensuke Iwanaga, Kodai Kitagawa, Chikamune Wada

4th Global Conference on Biomedical Engineering 260100 2020.11

Relationship between Lumbar Load and Initial Trunk Posture during Postural Change for a Patient on a Bed Reviewed International journal

Kodai Kitagawa, Koji Matsumoto, Siti Anom Ahmad, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

4th Global Conference on Biomedical Engineering 260050 2020.11

Walking Guidance System on Crosswalks for the Visually Impaired Reviewed International journal

Karin Kanemura, Yasuhiro Wada, Tibyani Tibyani, Randy Cahya Wihandika, Chikamune Wada

4th Global Conference on Biomedical Engineering 260269 2020.11

The Effect of Knee Brace on Sense of Position of Knee Joint－Analysis Focusing on The Mounting Pressure of The Brace－ Reviewed International journal

Hiroaki Yamamoto, Chikamune Wada

4th Global Conference on Biomedical Engineering 260017 2020.11

Measurement of thoracic kyphosis using the cranio-horizontal angle in the supine position Reviewed International journal

Mitsumasa Hida, Chikamune Wada, Kodai Kitagawa, Shogo Okamatsu, Masakazu Imaoka, Hidetoshi Nakao, Ryota Imai, Tadasuke Ohnishi, Katsumi Hamaoka

Asian Confederation for Physical Therapy Congress 2020 S20200622054953T21B10A 2020.10

Posture recognition method for caregivers during postural change of a patient on a bed using wearable sensors Reviewed International journal

Kitagawa K., Matsumoto K., Iwanaga K., Ahmad S.A., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

Advances in Science, Technology and Engineering Systems 5 ( 5 ) 1093 - 1098 2020.10

Inertial sensor-based instrumented cane for real-time walking cane kinematics estimation Reviewed International journal

Fernandez I.G., Ahmad S.A., Wada C.

Sensors (Switzerland) 20 ( 17 ) 1 - 19 2020.09

Millimeter Wave Radar Simulation for Human Balance Assessment Applications Reviewed

Ibai Gorordo Fernandez, Siti Anom Ahmad, Chikamune Wada

Proceedings of the SICE Annual Conference 2020 912 - 915 2020.09

3d printed robot hand structure using four-bar linkage mechanism for prosthetic application Reviewed International journal

Wahit M.A.A., Ahmad S.A., Marhaban M.H., Wada C., Izhar L.I.

Sensors (Switzerland) 20 ( 15 ) 1 - 22 2020.08

Monitoring System for L4/L5 Compression Force during Assistive Motion using Single Inertial Measurement Unit Reviewed

The 14th International Conference on Complex Medical Engineering Session 2-8 2020.08

Evaluation of a Commercial Force Sensor for Real Time Applications Reviewed International journal

11 ( 5 ) 421 - 426 2020.05

Analysis of Occupational Injury Reports Related to Patient Care Activities using Text Mining Technique Reviewed International journal

11th Asia Pacific Conference on Medical and Biological Engineering AP2-7-BD-001 2020.05

Obstacle Height Estimation Related to Suitable Viewpoint while Waiting for the Bus Using Color Moment Technique Reviewed

International Journal of Machine Learning and Computing 10 ( 3 ) 495 - 500 2020.05

Analysis of Occupational Injury Reports Related to Patient Care Activities Using Text Mining Technique Reviewed International journal

Kitagawa K., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

11th Asia Pacific Conference on Medical and Biological Engineering 82 153 - 158 2020.05

Shoe Detection Using SSD-MobileNet Architecture Reviewed

Fernandez I.G., Wada C.

LifeTech 2020 - 2020 IEEE 2nd Global Conference on Life Sciences and Technologies 171 - 172 2020.03

Validation of a body-conducted sound sensor for respiratory sound monitoring and a comparison with several sensors Reviewed International journal

Joyashiki T., Wada C.

Sensors (Switzerland) 20 ( 3 ) 2020.02

Validation of crutch length estimation methods and proposal of the new method Reviewed

NAGASAKI Takayuki, NINOMIYA Shogo, AKAGI Kaito, AKIYAMA Yuri, ICHIMARU Kiyoka, UCHIYAMA Yu, KUDO Takahiko, KONDO Yuri, SUGAWARA Nao, NAKAO Ayaka, HIRAI Rio, MINAKAMI Kenta, YOSHIMURA Daisuke, WADA Chikamune

Rehabilitation Engineering ( Rehabilitation Engineering Society of JAPAN (RESJA) ) 35 ( 1 ) 27 - 33 2020.02

マーカレスなデジタル画像を用いた円背測定手法の提案

肥田光正，和田親宗，岡松将吾，北川広大，大西忠輔，多田康貴，湯川貴史，川島聡史，南征吾，畑中良太

大阪河崎リハビリテーション大学紀要 ( 14 ) 27 - 31 2020.01

Measurement System for the Clothing Pressure of a Spinal Orthosis using Multiple Pressure Sensors Reviewed International journal

Koji Sakamoto, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

Journal of Mechanical and Electrical Intelligent System 3 ( 1 ) 1 - 9 2020.01

松葉杖長推計法の妥当性の検証と新しい推計法の提案 Reviewed

永﨑孝之，二宮省悟，赤木海斗，秋山ゆり，一丸貴代香，内山優，工藤孝彦，近藤佑吏，菅原菜央，中尾文香，平井莉麻，水上健太，吉村大輔，和田親宗

リハビリテーション・エンジニアリング 35 ( 1 ) 27 - 33 2020.01

Relationship between Lateral Bending and Shoulder Abduction during Double-crutch Walking Reviewed

Yoshiki NISHISAKO, NAGASAKI Takayuki, WADA Chikamune

Rigakuryoho Kagaku ( The Society of Physical Therapy Science ) 35 ( 1 ) 41 - 47 2020.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

[Purpose] We used musculoskeletal simulation to estimate abduction of the shoulder and lateral bending of the spinal column during crutch walking, and investigated the relationship between lateral bending of the spinal column and abduction of the shoulder during double-crutch walking. [Participants and Methods] The participants were five healthy young males. Data of movement during crutch walking was measured using a 3D motion analysis system. Based on the obtained data, shoulder joint abduction and lateral bending of the spinal column during double-crutch walking was estimated using a musculoskeletal simulation. [Results] A significant correlation between the lateral bending angle of the spinal column and abduction angle of the shoulder was found during the crutch stance phase. [Conclusion] A relationship between lateral bending of the spinal column and abduction angle of the shoulder was found, and it was considered that the axillary pad slipping out of the axilla during double-crutch walking was a possible factor.

DOI： 10.1589/rika.35.41

Other Link： https://ci.nii.ac.jp/naid/130007803151

Reliability of laser-assisted hindfoot alignment evaluation Reviewed

Ohnishi Tadasuke, Hida Mitsumasa, Nagasaki Takayuki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 32 ( 1 ) 38 - 41 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] A goniometer is frequently used for static measurement of hindfoot alignment. However, although goniometer measurements require experience, their reliability and validity remain controversial. We developed a hindfoot alignment measurement method by laser as an alternative measure. The purpose of this study was to examine the reliability of laser-assisted hindfoot alignment evaluation. [Participants and Methods] Two non-expert examiners (without medical knowledge), briefly trained in the use of laser-assisted hindfoot alignment evaluation, evaluated hindfoot alignment in 12 healthy participants. [Results] The ICC of the intra-rater reliability was 0.74 for both examiners and the ICC for inter-rater reliability was 0.43. [Conclusion] The good intra-rater and moderate inter-rater reliability of laser-assisted hindfoot alignment evaluation, when used by non-professionals, suggest the laser-assisted hindfoot alignment evaluation may be appropriate for use in clinical practice settings.

DOI： 10.1589/jpts.32.38

Other Link： https://ci.nii.ac.jp/naid/130007789043

Effects of the Characteristics and Duration of Chronic Pain on Psychosomatic Function in the Community-Dwelling Elderly Population Reviewed International journal

Hida M., Nakamura M., Imaoka M., Nakao H., Tasaki F., Omizu T., Takeda M., Ohnishi T., Wada C.

Pain Research and Management 2020 2020.01

Text Mining Analysis of Occupational Accidents in Healthcare Service Due to Awkward Movement Reviewed

KITAGAWA Kodai, NAGASAKI Takayuki, NAKANO Sota, HIDA Mitsumasa, OKAMATSU Shogo, WADA Chikamune

Journal of Occupational Safety and Health ( National Institute of Occupational Safety and Health ) 13 ( 2 ) 139 - 143 2020.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

The Ministry of Health, Labour, and Welfare recommends prevention of occupational accidents due to awkward movement in the healthcare service field. This study aimed to determine risk factors of occupational accidents from actual case reports. A total of 1,041 case reports of occupational accidents due to awkward movement in the healthcare service were investigated using the text mining analysis. The number of occurrences for each word was counted, and the co-occurrence network for each word was obtained based on Jaccard coefficients. Results showed that "lower back," "bed," "care," "pain," "transfer," "patient," and "wheelchair" co-occurred in many accident reports. Results suggested that occupational accidents with lower back pain frequently occurred while transferring patients from bed to wheelchair. A previous study in 2008 also reported these risk factors. However, these risk factors remain to be solved. Therefore, urgent and more effective countermeasures are necessary to prevent lower back pain because of transfer.

DOI： 10.2486/josh.JOSH-2020-0007-TA

Other Link： https://ci.nii.ac.jp/naid/130007887364

Usefulness of a simulated experience method for transfer assistance for hemiplegia or limited range of motion in multiple joints Reviewed

Nakano Sota, Okada Hirotaka, Higo Shigeyoshi, Nakamura Kouichi, Kitagawa Kodai, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 32 ( 8 ) 541 - 544 2020.01

Language：English Publishing type：Research paper (scientific journal)

[Purpose] To further the understanding of dysfunctions to which a simulated experience method could be applied, we clarified whether a simulated experience method can promote caregivers to utilize the abilities of care recipients with pseudo-hemiplegia or pseudo-limited range of motion (ROM) in multiple joints. [Participants and Methods] We studied transfer assistance in 60 nursing assistants from nursing home settings: 30 were assigned to the pseudo-hemiplegia (26 females, 4 males) and limited ROM in multiple joints (27 females, 3 males) groups. One healthy person was fitted with orthotic braces to mimic hemiplegia or limited ROM in multiple joints, each making it difficult to stand-up. Participants were randomized to either a simulated experience group (involving interventional help from a physical therapist between the first and second measurements) or a control group. The load difference on the lower limbs of the care recipient between two rounds of transfer assistance was examined. [Results] The difference between the second and first measurements was −5.9 ± 74.5 N for the control group and 107.9 ± 123.6 N for the simulated experience method in the pseudo-hemiplegia study, and −14.7 ± 64.7 N and 149.1 ± 132.4 N, respectively, for the pseudo-limited ROM-in-multiple-joints study. [Conclusion] The simulated experience method promoted transfer assistance of a care recipient with pseudo-hemiplegia or pseudo-limited ROM in multiple joints. These results suggest that hemiplegia and limited ROM in multiple joints are added as dysfunctions that can be applied to a simulated experience method in transfer assistance.

DOI： 10.1589/jpts.32.541

Other Link： https://ci.nii.ac.jp/naid/130007886026

Optimal foot-position of caregiver based on muscle activity of lower back and lower limb while providing sit-to-stand support Reviewed

Kitagawa Kodai, Nagasaki Takayuki, Nakano Sota, Hida Mitsumasa, Okamatsu Shogo, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 32 ( 8 ) 534 - 540 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] In caregivers, low load posture is necessary to prevent lower back pain during patient handling activities such as sit-to-stand support. This study focused on the foot-position of caregivers as an adjustable and useful parameter. A wide stance decreases the stress on the lumbar vertebra. However, this foot-position increases loading of the spinae erector muscles. The aim of this study was to investigate the relationship of anterior-posterior and lateral-medial distances between feet and activity of the spinae erector muscles to determine the optimal foot-position for reducing stress on the lumbar vertebra without increasing spinae erector muscle load. [Participants and Methods] Five young male participants were asked to provide sit-to-stand support 10 times using nine normalized foot-positions with different anterior-posterior and lateral-medial distances. Surface electromyograms of the erector spinae and lower limb muscles were measured during sit-to-stand support. [Results] The results showed that the optimal foot-position (anterior-posterior 55%, lateral-medial 20% of body height) increased muscle activity within the lower limb muscles compared with the lower back muscles and did not increase loads on the erector spinae muscle. [Conclusion] Optimizing foot-position can reduce stress on the lumbar vertebra without increasing load on the spinae erector muscles.

DOI： 10.1589/jpts.32.534

Other Link： https://ci.nii.ac.jp/naid/130007886024

Validation of body-conducted sound sensor (BCS) for evaluating arteriovenous fistula function Reviewed

Joyashiki Takeshi, Wada Chikamune

Iryou kikigaku (The Japanese journal of medical instrumentation) ( Japanese Society of Medical Instrumentation ) 90 ( 5 ) 414 - 422 2020.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

We verified that arteriovenous fistula (AVF) function can be evaluated from shunt sound using a body-conducted sound sensor (BCS) with a wide-band frequency characteristic. In the BCS, we compared two types of sensors: an air-coupled microphone (ACM) and an acceleration sensor (Type 8001). Evaluation for sensors were performed for 36 patients. We also developed a shunt-sound observation system and evaluated it using the spectrogram and power spectrum values obtained using a sound spectrometer. Furthermore, we verified that two indices of ultrasonography information, namely, the resistance index (RI) and flow volume (FV), can be estimated from the shunt sound and classified through machine learning. The BCS detected the shunt sound signal in the spectrogram over a wide frequency band. The sensitivities of the BCS in the non-amplified detection of stenosis sound signals were 0.93/0.92 (below 1 kHz/above 1 kHz, respectively), surpassing those of other sensors(ACM: 0.82/0.77, Type 8001: 0.82/0.25). Furthermore, the highest machine learning accuracy was obtained using BCS in the classification segments of RI > 0.60, 0.65, and 0.70 and FV < 350 ml/min. BCS is particularly suitable for detecting stenosis sounds of over 1 kHz and estimating RI and is considered to be suitable for functional evaluations of AVF.

DOI： 10.4286/jjmi.90.414

Other Link： https://ci.nii.ac.jp/naid/130007958314

Spinal postural alignment measurements using markerless digital photography Reviewed International journal

Hida M., Wada C., Imai R., Kitagawa K., Okamatsu S., Ohnishi T., Kawashima S.

Journal of Orthopaedic Surgery 28 ( 3 ) 2020.01

Regression equation between required force and lumbar load of caregiver in supporting standing-up motion via computational musculoskeletal simulation Reviewed International journal

Kitagawa K., Nishisako Y., Nagasaki T., Nakano S., Hida M., Okamatsu S., Wada C.

Pertanika Journal of Science and Technology 28 ( Special issue 2 ) 59 - 70 2020.01

Linear regression technique for improvement of feet position estimation during standing balance using a cane with millimeter wave radar Reviewed International journal

Fernandez I.G., Kitagawa K., Rahman K.A., Soh A.C., Gopalai A.A., Ahmad S.A., Wada C.

Pertanika Journal of Science and Technology 28 ( Special Issue 2 ) 71 - 81 2020.01

地域在住高齢者における慢性痛の保有期間と心身機能の関係 Reviewed

肥田光正，今岡真和，中村美砂，中尾秀俊，田崎史江，生水智子，武田雅俊，山坂宏太，大西忠輔，和田親宗

慢性疼痛 38 ( 1 ) 229 - 233 2019.12

立ち座り動作支援機器の開発と筋電位評価

三上隼人、土谷圭央、田中孝之、泉博之、和田親宗

第20回計測自動制御学会システムインテグレーション部門講演会 2B1-11 2019.12

ホーム転落防止のためのホーム端検出に関する研究

徳田あかり，和田康宏，和田親宗

第45回感覚代行シンポジウム講演論文集 45 - 48 2019.12

Effects of Counter-Movement Technique during Sport Climbing for Lower Limb Amputees through the Electromyogram Analysis Reviewed International journal

Ryoya Nakamura, Gen Okuya, Yoshiki. Nishisako, Kisuke Iwasaki, Kodai Kitagawa, Naoki Chijiwa, Hisashi Arizono, Chikamune Wada

International symposium on ubiquitous healthcare 2019 (uHealthcare 2019) P-05 2019.12

Prototype of measurement system for clothing pressures in spinal orthosis Reviewed International journal

Koji Sakamoto, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

The 17th International Conference on Biomedical Engineering (ICBME2019) No.1279 2019.12

Estimation Method for Step Length of Caregiver by Machine Learning Technique Using Combination of Insole Pressure Sensor and Inertial Measurement Unit Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Mitsumasa, Hida, Shogo Okamatsu, Chikamune Wada

The 17th International Conference on Biomedical Engineering (ICBME2019) No.1140 2019.12

Comparison of Regression Algorithm for Vanishing Point Estimation based on Car Distribution Reviewed International journal

Tangsuksant W., Noda M., Kitagawa K., Pintavirooj C., Wada C.

BMEiCON 2019 - 12th Biomedical Engineering International Conference 2019.11

体導音センサを用いたシャント血流音観察

城屋敷健志、谷口和久、安永親生、和田親宗、中野博

第52回九州人工透析研究会総会 76 2019.11

在住高齢者の慢性疼痛の有無ならびに保有期間と心理機能との関係

肥田光正，中村美砂，今岡真和，中尾英俊，田崎史江，生水智子，和田親宗，大西忠輔，武田雅俊

第3回日本リハビリテーション医学会秋季学術集会 P2-2-2-2 2019.11

デジタル画像計測による円背測定手法の開発

肥田光正，和田親宗，岡松将吾，北川広大，大西忠輔，多田康貴，湯川貴史，川島聡史，南征吾

第3回日本リハビリテーション医学会秋季学術集会 P3-1-2-4 2019.11

Foot Position Estimation During Standing Balance Using a Cane with Millimeter Wave Radar Reviewed International journal

Ibai Gorordo Fernandez, Chikamune Wada

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-15 2019.11

Relationship Between the Required Force for Patient Handling and the Lumbar Load of Caregiver in Musculoskeletal Simulation Reviewed International journal

Kodai Kitagawa, Yoshiki Nishisako, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-16 2019.11

Daily Activity Recognition Method using Sensor-Installed Cane Reviewed International journal

Chikamune Wada, Yunchu Huang, Yoshiki Nishisako1, Kodai Kitagawa, Naoya Kokusho, Takashi Fujimoto, Yoshio Tsuchiya, Hiroyuki Izumi, Takayuki Tanaka, Tatsuo Morifuji

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-08 2019.11

Image-based Shoe Detection Method for Foot Clearance Measurement Reviewed International journal

Nana Okadome, Ibai Gorordo Fernandez, Chikamune Wada

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-114 2019.11

Activity Recognition using Instrumented Cane with Force Sensor and Inertial Measurement Unit for Elderly People Reviewed International journal

Toshiyuki Terukina, Yoshiki Nishisako, Kodai Kitagawa, Tatsuo Morifuji, Naoya Kokusho, Takashi Fujimoto, Yoshio Tsuchiya, Hiroyuki Izumi, Takayuki Tanaka, Chikamune Wada

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-113 2019.11

An influence of spinal orthosis on the movement of pelvic and spinal during Movements for Wiping the Anus Reviewed International journal

Koji Sakamoto, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

7th International Symposium on Applied Engineering and Sciences (SAES2019) BM-106 2019.11

Clothing pressure measurement of a spinal orthosis during picking-up motion using pressure sensor system Reviewed International journal

Koji Sakamoto, Kodai Kitagawa, Yuji Katae, Naoki Chijiwa, Aki Kuwazono, Hisashi Arizono, Chikamune Wada

13th International collaboration Symposium on Information, Production and Systems (ISIPS2019) P7-2 2019.11

Decision tree-based model for feet distance estimation during assistive motion Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Mitsumasa Hida, Shogo Okamatsu, Chikamune Wada

13th International collaboration Symposium on Information, Production and Systems (ISIPS 2019) P7-3 2019.11

筋骨格シミュレータを用いた松葉杖歩行時の安定性における客観的な指標の検討　－松葉杖歩行時の重心加速度における特徴的な傾向の同定－

西迫善希，永﨑孝之，和田親宗

信学技報，WIT2019-21 29 - 32 2019.10

Comparison of Regression Algorithms for Foot Placement Estimation Method using Foot Pressure Data during Supporting Standing-up Motion Reviewed International journal

Kodai Kitagawa, Takayuki Nagasaki, Sota Nakano, Chikamune Wada

Proceedings of the SICE Annual Conference 2019 987 - 989 2019.09

Evaluation of a Commercial Force Sensor for Real Time Applications Reviewed International journal

Ahmed M. M. Almassri, Wan Zuha Wan Hasan, Chikamune Wada

14th International Conference on Innovative Computing, Information and Control ICICIC2019-082 2019.08

Acceleration Response Characteristics of Body-conducted Sound Sensors; Comparison with Several Acceleration Sensors Reviewed International journal

Takeshi Joyashiki, Chikamune Wada

5th World Congress on Electrical Engineering and Computer Systems and Sciences 2019.08

ベッド上での体位変換介助における介助者の足部配置と腰部負荷の関係

松本光司，北川広大，和田親宗

第34回リハ工学カンファレンスinさっぽろ　講演論文集 162 - 163 2019.08

S2E4-3　Effects of flow state on physiological responses during mirror tracing task

KURAOKA Hiroyuki, KIN Emi, TAKAI Ryuichirou, WADA Chikamune, MIYAKE Shinji

The Japanese Journal of Ergonomics ( Japan Ergonomics Society ) 55 ( Supplement ) S2E4-3 - S2E4-3 2019.06

Change of the Ground Reaction Force Obtained from Insole Pressure Sensors during Assistive Motion with Different Lumbar Loads Reviewed

P3-1069 2019.06

Influence of Floating Toe on Motor Function of Elderly People Reviewed

P3-481 2019.06

鏡映描写課題遂行時におけるフロー状態と生理反応の関係

倉岡宏幸，金愛未，高井瑠一朗，和田親宗，三宅晋司

日本人間工学会第60回大会 S2E4-3 2019.06

Grasping and attached mode in human-computer interaction in the study of mouse substitution Reviewed International journal

Widodo R., Quita R., Amrizal S., Gunawan R., Wada C., Ardiansyah A., Sutrisno I., Rahmat M., Arfianto A., Handoko C., Santoso A., Santosa A., Ardhana V., Setiawan E.

Journal of Physics: Conference Series 1196 ( 1 ) 2019.04

Obstacle Height Estimation Related to Suitable Viewpoint while Waiting for the Bus using Color Moment Technique Reviewed International journal

Paper ID: CT005 2019.04

MUSCULOSKELETAL SIMULATION OF THE RELATIONSHIP BETWEEN FOOT POSITION AND STRESS OF THE L4-L5 JOINT IN SUPPORTING STANDING-UP MOTION TO PREVENT LOW BACK PAIN AMONG CAREGIVERS Reviewed International journal

Kitagawa K., Nishisako Y., Nagasaki T., Nakano S., Wada C.

Journal of Mechanics in Medicine and Biology 19 ( 2 ) 2019.03

Cane with millimeter wave radar for base of support measurement Reviewed International journal

Fernandez I.G., Wada C.

2019 IEEE 1st Global Conference on Life Sciences and Technologies, LifeTech 2019 133 - 136 2019.03

実装条件における体導音センサと空気伝導型マイクロホンの特性と比較

城屋敷健志,和田親宗

2019年日本生体医工学会九州支部学術講演会 1B5 2019.03

杖型計測装置による日常動作の識別方法の提案

黄贇初,西迫善希,北川広大,森藤達雄,國生直也,藤本隆,土谷圭央,泉博之,田中孝之,和田親宗

2019年日本生体医工学会九州支部学術講演会 1A4 2019.03

Neural Network Model for Electromagnetic Position Tracker Recalibration Reviewed International journal

CD-091 2019.02

A study of hand-movement gestures to substitute for mouse-cursor placement using an inertial sensor Reviewed International journal

Widodo R.B., Quita R.M., Setiawan R., Wada C.

Journal of Sensors and Sensor Systems 8 ( 1 ) 95 - 104 2019.02

Evaluation of upper limb muscle load in lower-limb amputees during ladder climbing Reviewed International journal

5 ( 1 ) 33 - 39 2019.02

Static Obstacle Detection along the Road with a Combined Method Reviewed International journal

Tangsuksant W., Wada C.

BMEiCON 2018 - 11th Biomedical Engineering International Conference 2019.01

Effect of age on heart rate responses and subjective mental workload during mental tasks Reviewed International journal

Kuraoka H., Kurosaka C., Wada C., Miyake S.

Advances in Intelligent Systems and Computing 827 316 - 321 2019.01

Viewpoint classification for the bus-waiting blinds in congested traffic environment Reviewed International journal

Tangsuksant W., Noda M., Kitagawa K., Wada C.

International Journal of Fuzzy Logic and Intelligent Systems 19 ( 1 ) 48 - 58 2019.01

Analysis of Muscle Activity Related to Retention of the Axillary Pad of Crutches Reviewed

NISHISAKO Yoshiki, NAGASAKI Takayuki, WADA Chikamune

Rigakuryoho Kagaku ( The Society of Physical Therapy Science ) 34 ( 2 ) 199 - 204 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] To clarify the reason why the axillary pad often deviates from the axilla during double-crutch walking using a musculoskeletal simulator. [Participants and Methods] The subjects were five healthy young males without orthopedic disease. Movement during crutch walking was measured using a 3D motion analysis system. Based on the obtained data, muscle activity related to the shoulder joint during double-crutch walking was modeled using a musculoskeletal simulation. [Results] The shoulder joint was abducted in the crutch stance phase of all subjects. [Conclusion] The results suggest that crutch walking with the shoulder blades rotated downward may suppress the activity of the abductor muscle of the shoulder joint and the activity of the shoulder joint adductor muscle.

DOI： 10.1589/rika.34.199

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85065927350&origin=inward

Usefulness of simulation method to improve efficiency of chair-to-wheelchair transfer of patients performed by caregivers Reviewed

Nakano Sota, Okada Hirotaka, Higo Shigeyoshi, Nakamura Kouichi, Kitagawa Kodai, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 31 ( 10 ) 802 - 806 2019.01

Language：English Publishing type：Research paper (scientific journal)

[Purpose] We aimed to clarify whether demonstration and simulated experience help the ability of care-receivers to get transferred, such as from the bed to the commode. [Participants and Methods] Participants included 28 nurses and 17 caregivers (34 females and 11 males). We developed a total floor reaction force measurement device to quantify the total loading level of care-receivers and caregivers and force shoes to quantify the loading level of the caregivers. Using these instruments, we constructed a system to measure the load on the lower limbs of the care-receivers during partial assistance. We divided the participants into the control, demonstration, and simulated experience method groups. We examined the differences in the load on the lower limbs before and after the intervention. [Results] The loads on the lower limbs of care-receivers when their buttocks were lifted from the chair were 11.7 ± 69.6, 61.8 ± 79.4, and 101.0 ± 104.0 N in the control, demonstration, and simulated experience groups. [Conclusion] These data suggest that the simulated experience method could help make use of the ability of the care-receiver to get transferred. Even care workers for the sanatorium-type sickbeds could learn to utilize the physical ability of the care-receivers using simulated experience.

DOI： 10.1589/jpts.31.802

Other Link： https://ci.nii.ac.jp/naid/130007731293

Relationship between surface electromyography of the spinae erector muscles and subjectively adjusted step length in the supporting standing-up motion Reviewed

Kitagawa Kodai, Uezono Tsuyoshi, Nagasaki Takayuki, Nakano Sota, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 31 ( 11 ) 869 - 872 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] Caregivers experience low back pain owing to frequent patient handling motions such as supporting the body while standing up. To prevent low back pain in caregivers, low load posture while engaging in patient handling motions is required. We determined the relationship between surface electromyography of the erector spinae muscles and subjective step length as “long” and “short” during the supporting standing-up motions of caregivers. [Participants and Methods] Ten young male participants were asked to perform supporting standing-up motion 10 times using two-step lengths comprised of subjective long and short steps. During supporting standing-up motion, we measured surface electromyograms of the erector spinae muscles and calculated the integral electromyographic values. [Results] The subjective long/short-step length normalized by body height did not differ across the participants. In addition, the subjective long-step length was longer than the subjective short-step length in all the participants. Integral electromyographic values for both the left and right erector spinae muscles in the short-step length were significantly lower than those in the long-step length when the data obtained from all the participants were used. [Conclusion] We considered that the load of the erector spinae muscle will be reduced if the short-step instead of the long-step instruction is given. In the future, instructions based on the subjective step-length variation in caregivers must be considered.

DOI： 10.1589/jpts.31.869

Other Link： https://ci.nii.ac.jp/naid/130007751390

Development of real-time electromyography controlled 3D printed robot hand prototype Reviewed

Wahit M.A.A., Romzi F.Z., Ahmad S.A., Marhaban M.H., Chikamune W.

International Journal of Electrical and Computer Engineering Systems 10 ( 1 ) 35 - 44 2019.01

Prototype of Musculoskeletal Model for Assistance Motion of Standing-up Reviewed

259 - 260 2018.12

Simulation of ultrasonic sensor placement for foot angle estimation Reviewed International journal

23 2018.12

Performance Evaluation of a Commercial Electromagnetic Tracking Controller for Motion Capture Reviewed

124 - 125 2018.12

Comparison of HSV and RGB ColorModels using Color Moment for Obstacles Matching along the Road Reviewed

126 - 127 2018.12

Comparison of Body-conducted sound sensor and Air-conducted sound Sensor via a lung sound simulator Reviewed

128 - 129 2018.12

Development of Real-time Secured Grasping System for Wearable Robotic Hand Glove Reviewed

162 - 163 2018.12

ストレス軽減のためのガム咀嚼のタイミングがRR間隔に及ぼす影響

福本舜介,和田親宗

第51回日本人間工学会中国四国支部大会講演番号307 2018.12

鏡映描写課題遂行時におけるフロー状態に関する研究

倉岡宏幸，金愛未，高井瑠一朗，和田親宗，三宅晋司

日本人間工学会九州・沖縄支部第39回大会 2-1 2018.12

Relationship between body acceleration and muscle load of upper limbs in lower-limb amputees during ladder climbing Reviewed

Iwasaki K., Okuya G., Chijiwa N., Arizono H., Wada C.

2018 International Conference on Information and Communication Technology Robotics, ICT-ROBOT 2018 2018.11

Classification Method of Assistance Motions for Standing-up with Different Foot Anteroposterior Positions using Wearable Sensors Reviewed

Kitagawa K., Uezono T., Nagasaki T., Nakano S., Wada C.

2018 International Conference on Information and Communication Technology Robotics, ICT-ROBOT 2018 2018.11

Basic Study on Viewpoints Classification Method using Car Distribution on the Road Reviewed International journal

Noda M., Miyamoto H., Tangsuksant W., Kitagawa K., Wada C.

2018 International Conference on Information and Communication Technology Robotics, ICT-ROBOT 2018 2018.11

Effects of crutch tips position to the lateral bending and rotation of the spinal column during crutch walking Reviewed International journal

PLH-210 2018.11

Influence of lower-limb muscle during ladder-climbing in lower-limb amputees Reviewed International journal

2018.11

Relationship between foot position and stresses of the L4 L5 joint in supported standing-up via musculoskeletal simulation Reviewed International journal

PSS-204 2018.11

Classification of Viewpoints Related to Bus Waiting for the Assistance of Blind People Reviewed International journal

4 ( 9 ) 43 - 52 2018.09

等価回路モデルを用いた体導音センサの周波数特性推定 Reviewed

城屋敷健志,和田親宗

生体医工学 56 ( 2 ) 44 - 51 2018.09

Wearable robotic glove for hand rehabilitation based on real time pressure measurement system Reviewed International journal

2018.08

Self-calibration algorithm for a pressure sensor with a real-time approach based on an artificial neural network Reviewed International journal

Almassri A.M.M., Hasan W.Z.W., Ahmad S.A., Shafie S., Wada C., Horio K.

Sensors (Switzerland) 18 ( 8 ) 2018.08

Automatic classification method using machine learning with a single inertial measurement unit for trunk posture category of OWAS Reviewed International journal

ID 1660 2018.06

An estimation method for lower-limb joint angles during the motion of standing up using an inertial measurement unit Reviewed International journal

ID 1695 2018.06

1D4-2　Autonomic nervous system indices and subjective mental workload during mirror tracing task

KURAOKA Hiroyuki, WADA Chikamune, MIYAKE Shinji

The Japanese Journal of Ergonomics ( Japan Ergonomics Society ) 54 ( Supplement ) 1D4-2 - 1D4-2 2018.06

Force feedback training system to hold axillary crutch stably Reviewed International journal

Wada C., Nagasaki T.

Proceeding - 2017 5th International Conference on Electrical, Electronics and Information Engineering: Smart Innovations for Bridging Future Technologies, ICEEIE 2017 2018-January 71 - 76 2018.03

Novel method for evaluation of hindfoot alignment in weight-bearing position using laser beam Reviewed

Ohnishi Tadasuke, Hida Mitsumasa, Nakamura Yukio, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 30 ( 3 ) 474 - 478 2018.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] It is clinically important to accurately evaluate the alignment of hindfoot alignment from the body surface in weight-bearing position. In general, measurement is carried out using a goniometer, but the measurement with goniometer requires experience, and the reliability in this measurement is also in question. Therefore, it is necessary to establish a clinical measurement method to replace the goniometer. As a solution, we devised a hindfoot alignment measurement method with laser beam (HAML), which measures hindfoot alignment along the body surface using a laser beam. This study aimed to study the correlation between the measurement result along the body surface with laser or goniometer and that of radiography with regard to hindfoot alignment. [Subjects and Methods] Subjects included 23 individuals with knee osteoarthritis. Their hindfoot alignment using radiography and goniometry were measured. The correlation between the measurement result along the body surface with or without laser and radiography was investigated. [Results] The correlation between HAML and radiography was better than that between HAML and goniometry. [Conclusion] The correlation between radiography and HAML for measuring hindfoot alignment was good. This finding implies that HAML can be used as a screening test or epidemiological survey in regional medicine.

DOI： 10.1589/jpts.30.474

Other Link： https://ci.nii.ac.jp/naid/130006413901

New estimation model of the initial lower limb angle to improve angle estimation during the extension phase of standing-up movement Reviewed

Jin Fang, Nagasaki Takayuki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 30 ( 5 ) 669 - 674 2018.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] An estimation model of the knee and ankle joint angles during the extension phase was proposed in the previous study. However, it had limited use because of the fixed initial lower limb angle before standing up. This study aimed to propose a new estimation model of the initial lower limb angle to improve the angle estimation during extension phase. [Subjects and Methods] Seven healthy male volunteers were enrolled. The new estimation model approximated the initial lower limb angle using a force sensor plate that measured the plantar pressure of the subjects. The estimated angle and force were compared to those obtained by a motion capture system and force plate. [Results] The new estimation model of initial lower limb angle showed no significant difference compared with the true values obtained by motion capture, except for the subject who had a greater foot-pressure measurement error compared with the force plate measurement, with maximum errors of 5.98° and 6.31°, respectively. [Conclusion] The proposed model in this study can estimate the initial lower limb angle before standing and can be applied to the angle estimation model during the extension phase of the standing-up movement.

DOI： 10.1589/jpts.30.669

Other Link： https://ci.nii.ac.jp/naid/130006732364

Novel method for evaluation of frontal plane knee alignment using bony prominences in patients with osteoarthritis Reviewed

Ohnishi Tadasuke, Hida Mitsumasa, Nagasaki Takayuki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 30 ( 9 ) 1168 - 1172 2018.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] Angle measurement using images of bony prominences (AMI) determines frontal plane knee alignment from the skin surface without using radiation. The purpose of this study was to assess the validity and reliability of images obtained with the AMI method. [Participants and Methods] The study included 21 patients with osteoarthritis. We measured the functional axis of the lower limb, obtained via full-leg radiography and correlated the findings with the angle of dissection and the angle measured with the AMI method. Additionally, we assessed the reliability of the AMI method. [Results] The angle obtained using the AMI method and the radiographic anatomic axis (the full-leg radiograph)/the mechanical axis were well correlated. The AMI method also showed high reliability. [Conclusion] The AMI method is a valid and reliable alternative to full-leg radiography for imaging of functional and anatomical knee axes. As AMI does not use special equipment or involve radiation exposure, the method can be used in outside medical facilities and can be repeated over time without increased risk to patients.

DOI： 10.1589/jpts.30.1168

Other Link： https://ci.nii.ac.jp/naid/130007481316

Estimation of the Frequency Response of Body-conducted Sound Sensors via the Equivalent Circuit Model Reviewed

JOYASHIKI Takeshi, WADA Chikamune

Transactions of Japanese Society for Medical and Biological Engineering ( Japanese Society for Medical and Biological Engineering ) 56 ( 2 ) 44 - 51 2018.01

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

Body-conducted sound sensors have an electret condenser microphone with an exposed diaphragm. By covering the sensor with a urethane elastomer, the sensor can be used as a bioacoustic sensor with high sensitivity and resistance to external noise. The body-conducted sound sensors constructed in the past had different parameters such as contact area, thickness of the propagation layer and mass, and the extent of their influence on frequency characteristics is unclear. This study aimed to investigate the influence of the mass and shape of body-conducted sound sensor on pressure sensitivity. The methods comprised ( 1 ) simulation using the equivalent circuit model, ( 2 ) production of body-conducted sound sensors and measurement systems, and ( 3 ) sensitivity measurements and analyses. The simulation results demonstrated that the sensitivity increased when the body-conducted sound sensor had a small mass and a large contact area. In the sensitivity measurement system, a compact acceleration sensor was used as a reference sensor, and the sensitivity to pressure was calculated. The results obtained from the sensitivity measurement system correlated strongly with the frequency characteristics of the simulations, with a correlation coefficient of 0.90-0.95 in the frequency range of 100-2,000Hz. In the statistical analysis, by varying the mass and contact area, significant differences were observed in the frequency range of 700-2,000Hz while no significant differences were observed in the frequency range of 100-600Hz. Moreover, as a result of reducing the housing mass, sensitivity was increased. In conclusion, body-conducted sound sensors with a small mass and large contact area exhibit high pressure sensitivity in the frequency range of 700-2,000Hz, and their frequency characteristics can be estimated by simulation.

DOI： 10.11239/jsmbe.56.44

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85067125589&origin=inward

Design of a wireless surface EMG acquisition system Reviewed International journal

Ishak A., Ahmad S., Soh A., Naraina N., Jusoh R., Chikamune W.

2017 24th International Conference on Mechatronics and Machine Vision in Practice, M2VIP 2017 2017-December 1 - 6 2017.12

New Combination Method for Road Features Extraction Reviewed

Paper ID:104A4 2017.11

n estimation method of knee and ankle joint angles during standing up motion using an inertial sensor Reviewed International journal

2017.11

Development of Axillary Pressure Feedback System for Crutch Walking Reviewed International journal

Paper FrBT16.2 2017.07

Auto-grasping algorithm of robot gripper based on pressure sensor measurement Reviewed International journal

ALmassri A.M.M., Wada C., Wan Hasan W.Z., Ahmad S.A.

Pertanika Journal of Science and Technology 25 ( S ) 113 - 122 2017.02

Artificial Neural Network Based Step-Length Prediction Using Ultrasonic Sensors from Simulation to Implementation in Shoe-Type Measurement Device Reviewed

Journal of Advanced Computational Intelligence and Intelligent Informatics 21 ( 2 ) 321 - 329 2017.02

Study of the Relationship Between Sit-to-Stand Activity and Seat Orientation Reviewed

21 ( 2 ) 337 - 341 2017.02

Real-time human motion analysis and grasping force using the OptiTrack system and flexi-force sensor Reviewed International journal

Saidon N.F.E., Wada C., Ahmad S.A., Rahman R.Z.A., Eguchi K., Tomiyama Y., Rahman F.I.A.

Pertanika Journal of Science and Technology 25 ( S ) 69 - 76 2017.01

An estimation of knee and ankle joint angles during extension phase of standing up motion performed using an inertial sensor Reviewed

Jin Fang, Nagasaki Takayuki, Wada Chikamune

Journal of Physical Therapy Science ( The Society of Physical Therapy Science ) 29 ( 7 ) 1171 - 1175 2017.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

[Purpose] Motion capture system is difficult to use in daily life. The aim of this study was to propose an estimation model for knee and ankle joint angle measurements and locate body center of gravity (COG) of the extension phase during standing-up motion. [Subjects and Methods] Seven healthy male volunteers were enrolled. An estimation model was proposed for the knee and ankle joint angle measurements by combining the angle and acceleration of the trunk, based on readings from the inertial sensor attachment on the subject’s chest, during the extension phase. Joint angles and COG position were compared to those obtained by a motion capture system. [Results] The joint angles and COG position demonstrated high correlation coefficients which represent strong correlation between the proposed model and the motion capture system. The proposed model could estimate the joint angle during extension phase, with a maximum error of 4.58 degrees, as well as COG position in the horizontal and vertical directions with maximum errors of 4.48 cm and 3.19 cm, respectively. [Conclusion] The proposed system could be used instead of motion capture system to estimate knee and ankle joint angles; however, the estimation of the COG position was insufficient because of lacked accuracy.

DOI： 10.1589/jpts.29.1171

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85024372785&origin=inward

Attitude Estimation using Kalman Filtering: External Acceleration Compensation Considerations Reviewed International journal

Romy B. Widodo, C. Wada

Journal of Sensors 2016 Article ID 6943040 2016.12

Wearable Robotic Hand Glove System Based on Multi Force Sensors for Rehabilitation Application Reviewed

87 2016.12

Analysis of Foot Plantar Pressure using Platform System for Foot Health Screening Reviewed

89 2016.12

Estimation of lower limb angle from inertial sensor to estimate extension phase during standing-up movement Reviewed

91 2016.12

Improvement Study on a Shoe-type Measurement Device Reviewed

92 2016.12

Analysis of pressure exerted on the hand grip to estimate the pressure applied to the palm during double-crutch walking Reviewed

93 2016.12

Trial Manufacture of Grasping Force Feedback System Using Pressure Stimulus for Prosthesis Limb Reviewed

177 2016.12

Physical Measurement for Human Assistive Technology Invited Reviewed International journal

2016.09

Estimating the Initial Trunk Angle for a Standing-Up Motion Guidance System Using an Inertial Sensor Reviewed

Paper ID: SS6-1 2016.09

Development of Devices to Measure Loads on Care-Receivers' Lower Limbs on Assisted Transfer Reviewed

Paper ID: Th2aPo4.8 2016.09

Simulation of Ultrasonic Sensors in a Shoe-Type Measurement Device Reviewed

Paper ID: Fr2E.1 2016.09

Real-time human motion analysis and grasping force using the OptiTrack system and Flexi-force sensor Reviewed International journal

International Conference on Electrical & Electronic Technology 2016 Paper ID:1021 2016.08

Auto-grasping Algorithm of Robot Gripper Based on Pressure Sensor Measurement Reviewed International journal

International Conference on Electrical & Electronic Technology 2016 Paper ID:1055 2016.08

Influence of electrical stimulation on hip joint adductor muscle activity during maximum effort Reviewed

28 ( 5 ) 1633 - 1635 2016.05

Analysis of Crutch Position in the Horizontal Plane to confirm the stability of the axillary pad for safe double-crutch walking Reviewed

28 ( 5 ) 1438 - 1442 2016.05

No English title Invited

3 ( 1 ) 1 - 3 2016.03

The influence of antagonist muscle electrical stimulation on maximal hip adduction force Reviewed

28 ( 1 ) 124 - 127 2016.01

1F3-3　Verification of the load alleviation effect of using a work assist tool with simulated work

IZUMI Hiroyuki, WADA Chikamune, KISHIMOTO Araki, TANAKA Takayuki

The Japanese Journal of Ergonomics ( Japan Ergonomics Society ) 52 ( Supplement ) S232 - S233 2016.01

2D1-3　Effects of different instructions on performance, subjective and physiological responses induced by the same mental task

KURAOKA Hiroyuki, WADA Chikamune, TSURUHARA Kazuki, MIYAKE Shinji

The Japanese Journal of Ergonomics ( Japan Ergonomics Society ) 52 ( Supplement ) S324 - S325 2016.01

An accurate wireless data transmission and low power consumption of foot plantar pressure measurements Reviewed International journal

302 - 307A 2015.12

Optimisation of grasping object based on pressure sensor measurement for robotics hand gripper Reviewed International journal

Almassri A.M., Wanhasan W.Z., Ahmad S.A., Ishak A.J., Wada C.

Proceedings of the International Conference on Sensing Technology, ICST 2016-March 795 - 798 2015.12

Improvement of a standing-up motion guidance system using an inertial sensor Reviewed

84 2015.09

Development of new tele-rehabilitaion system using virtual reality technology for the elderly and the disabled person Reviewed

82 2015.09

A study of the relationship between sit-to-stand activity and seat orientation Reviewed International journal

paper ID: 828 2015.08

Effects of a sensory intake task on heart rate and heart rate variability Reviewed International journal

2015.08

Analysis of crutch position in the horizontal plane for confirming the stability of the axillary pad during double-crutch walking Reviewed International journal

paper ID: 1006 2015.08

Novel method for evaluation of subtalar joint alignment under weight-bearing conditions using laser beam Reviewed International journal

2015.05

介助者の足部位置が要移乗介助者の立ち上がる力に及ぼす影響 Reviewed

中野聡太,和田親宗,加藤浩

理学療法科学 30 ( 5 ) 725 - 728 2015.05

A new device for foot sensory examination employing auto-presentation of shear force stimuli against the skin Reviewed

10 ( 2 ) 1 - 11 Paper No.14-00487 2015.05

Sensitivity Evaluation of Body-Conducted Sound Sensors to Measure Breath Sound:-Study of the Design Supported by the Electric Equivalent Circuit Model Simulation and Finite Element Method-

JOYASHIKI Takeshi, WADA Chikamune

Proceedings of the Annual Conference of Biomedical Fuzzy Systems Association ( Biomedical Fuzzy Systems Association ) 28 ( 0 ) 239 - 240 2015.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)

Breathing sound reflects the respiratory status, such as a state of airway, effort of respiration, alteration of sound induced by disease, and so on. We have been developing a breath sound sensor with improved acoustic impedance matching. In this paper, we compared two simulation methods based on the frequency characteristics of sensor. First of all, we executed numerical analysis of breath sound sensor, based on the electrical equivalent circuit model. Next, we used the FEM to simulate compared with the numerical simulation in electrical equivalent circuit model. The reason why to use FEM was that FEM could simulate the various conditions of sensor parameter. From the results, we concluded FEM simulation was more useful.

DOI： 10.24466/pacbfsa.28.0_239

Other Link： https://ci.nii.ac.jp/naid/130007998636

OS3-6 Improvement of a Standing-up Motion Guidance System using an Inertial Sensor(OS3: Rehabilitation Devices II) Reviewed International journal

Wada Chikamune, Eguchi Kiyotaka, Jin Fang

The Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics ( The Japan Society of Mechanical Engineers ) 2015.8 ( 0 ) 84 2015.01

2D46 Influence of heat and ice therapy on hip joint contracture

Ikeda WATARU, WADA Chikamune, NAKANO Sota

The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME ( The Japan Society of Mechanical Engineers ) 2015.27 ( 0 ) 473 - 474 2015.01

便座からの起立・着座動作時の頭部運動に着目した身体的負担に関する考察

近井学, 小澤恵美, 土井幸輝, 島田茂伸, 和田親宗, 井野秀一

電子情報通信学会技術研究報告（福祉情報工学） 115 53 - 57 2015.01

OS3-3 DEVELOPMENT OF NEW TELE-REHABILITATION SYSTEM USING VIRTUAL REALITY TECHNOLOGY FOR THE ELDERLY AND THE DISABLED PERSON(OS3: Rehabilitation Devices I) Reviewed International journal

Nakajima Yasuhiro, Wada Chikamune, Kudo Akira, Sugihara Shunichi, Izumi Takashi, Miyasaka Tomoya, Kuwano Kohki, Maeda Daisuke, Tanaka Toshiaki

The Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics ( The Japan Society of Mechanical Engineers ) 2015.8 ( 0 ) 82 2015.01

Complementary Filter for Orientation Estimation: Adaptive gain based on dynamic acceleration and its change Reviewed

906 - 909 2014.12

Can electrical stimulation of the tensor fascia lata muscle decrease the maximum adduction force of the hip joint? Reviewed

1627 - 1628 2014.12

Estimation and Improvement of Foot Pressure Measurement System for Standing-Up Motion in Elderly Reviewed

1064 - 1067 2014.12

Pressure Sensor: State of the Art, Design, and Application for Robotic Hand Reviewed International journal

Article ID 846487 2014.12

Development of a sensory-enhancing robot-aided rehabilitation system with tendon vibration Reviewed International journal

39 2014.10

The use of combined warm and cold stimulation for palm apparent motion Reviewed International journal

PF05 2014.10

Effects of differences in task characteristics on autonomic nervous system responses Reviewed International journal

94 133 2014.09

Trial Study to measure foot position for a walking rehabilitation support system using a shoe-type measurement device Reviewed International journal

2534 - 2537 2014.09

起立動作誘導システム Invited

和田親宗

化学工業 ( 化学工業社 ) 65 ( 8 ) 29 - 33 2014.08

Analysis of pressures exerted on the shoulder piece (Axillary pad) while using a crutch Reviewed International journal

Paper ID 108 2014.06

松葉杖歩行における手掌部疼痛に関する基礎研究 Reviewed

永崎孝之,加藤浩,岡田裕隆,有薗央,千々末光,千々和直樹,和田親宗

リハビリテーション・エンジニアリング 29 ( 2 ) 100 - 106 2014.05

Analysis of Crutch Position in the Horizontal Plane to Estimate the Stability of the Axillary Pad in the Axilla during Single-crutch Walking Reviewed

26 ( 11 ) 1753 - 1756 2014.01

Development of a Standing-up Motion Guidance System using an Inertial Sensor Reviewed International journal

Fa5-3 2013.11

上腕への振動刺激による運動錯覚現象の創出に関する試み

松澤卓実,和田太,蜂須賀研二,和田親宗

第55回北九州医工学術者会議 2013.10

A Method for the Estimation of Continuous Blood Pressure Measurement Reviewed International journal

Paper ID 019 2013.09

A Standing -Up Motion Guidance System by Estimating COG Movementment Reviewed International journal

Paper ID 024 2013.09

Study on Excessive Shrinkage Control that Prevents the Passive Exercise to the Hip Abduction Direction Reviewed International journal

Paper ID 015 2013.09

Characteristics of Breathing Sound Sensor with improved Acoustic Impedance Matching Reviewed International journal

Paper ID 016 2013.09

Improvement Research of Shoe-Type Measurement Device for a Walking Rehabilitation Support System Reviewed International journal

157 - 164 2013.07

Designing a Metal Hydride Actuator with Human-Compatible Softness and High Power-to-Weight Ratio for Future Quality-of-Life Technologies Reviewed International journal

111 - 120 2013.07

Development of a Chest X-ray Examination Support System for Foreigners Using a Personal Digital Assistant Reviewed International journal

285 - 290 2013.07

慣性センサを用いた立ち上がり動作サポートシステムの提案

藤本司,和田親宗

第54回北九州医工学術者会議 2013.02

他動的な股関節外転運動を妨げる過剰収縮抑制条件の調査

紺原正貴,中野聡太,和田親宗

第54回北九州医工学術者会議 2013.02

Study on Wireless Shoe-Type Measurement Device to Support Walking Rehabilitation Reviewed

WADA Chikamune, WADA Futoshi, SUGIMURA Yukinobu, IENAGA Takafumi, KIMURO Yoshihiko, TSUJI Takunori, HACHISUKA Kenji

The transactions of the Institute of Electronics, Information and Communication Engineers. B 95 ( 11 ) 1499 - 1507 2012.11

Relationship between Perceptual Intensity of Electrical Stimulation and Electrical Skin Impedance on the Palm Reviewed

The 10th Asia Pacific Conference on Human Interaction 753 - 754 2012.08

Estimating standing-up motion by using foot pressure to assist standing up for the elderly Reviewed

SICE Annual Conference 2012 1956 - 1958 2012.08

Improvement Study for measurement accuracy on Wireless Shoe-type Measurement Device to support Walking Rehabilitation Reviewed

471 - 474 2012.07

靴型計測装置による歩行時の足部の位置推定

池田克,家永貴史,木室義彦,和田太,蜂須賀研二,和田親宗

第52回北九州医工学術者協会誌 2012.02

足底圧力情報による立ち上がり動作推定

徳永誠,和田親宗

第52回北九州医工学術者協会誌 2012.02

Proposal of force feedback method by grasping arm to control upper extremity prosthesis Reviewed

158 - 161 2011.11

Basic Research on the Method of Presenting Distance Information to the Blind by Means of Gait Measurement Reviewed International journal

31 ( 4 ) 283 - 287 2011.08

Proposal of Evaluation Method Using Finger Plethysmogram for Mental Stress Reviewed

HAGIWARA Chie, WADA Chikamune

The Transactions of the Institute of Electronics, Information and Communication Engineers. A 94 ( 1 ) 44 - 45 2011.01

手のひらの冷覚知覚特性を考慮した仮現運動生成のための刺激呈示法 Reviewed

岩崎泰典, 堀尾寛, 和田親宗

ライフサポート = / the Society of Life Support Technology [編] 22 ( 4 ) 160 - 167 2010.12

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

For the deaf-blind person, in order to develop communication support device which could handwrite a letter on a palm, we have been studying apparent movement phenomenon by cold stimulus on a palm. From our previous experimental results, it was hypothesized that the reason why the apparent movement was not induced at certain region of palm was difference in perceptive characteristics for cold sensation. Therefore, we proposed new stimulation presentation method to induce apparent movement based on perceptive characteristics for cold sensation. In the first experiment, perceptive characteristics for cold sensation on the palm were investigated. Response time to perceive coldness was used as one perceptive characteristics and that time was measured on 72 regions of palm by using peltier element and thermocouple. As a result, it was found that response time varied with palm region and subject. In the second experiment, an occurrence ratio of apparent movement by using stimulation presenting method based on the response time was compared with that by previous method in which response time was not considered. The difference between stimulation presenting method based on the response time and method without consideration for the response time was that response time was added to stimulus duration in the former method. From the results, it was found the occurrence ratio of apparent movement increased when two cold stimuli were presented by using stimulation presenting method based on the response time at two regions where both of response times were above average.

DOI： 10.5136/lifesupport.22.160