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JRM Vol.35 No.3 pp. 547-555
doi: 10.20965/jrm.2023.p0547
(2023)

Review:

Motor Characteristics of Human Adaptations to External Assistive Forces

Wen Liang Yeoh* ORCID Icon, Jeewon Choi** ORCID Icon, Ping Yeap Loh*** ORCID Icon, Osamu Fukuda* ORCID Icon, and Satoshi Muraki*** ORCID Icon

*Faculty of Science and Engineering, Saga University
1 Honjo-machi, Saga 840-8502, Japan

**Department of Industrial and Management Systems Engineering, Dong-A University
37 Nakdong-daero, 550 Beon-gil, Saha-gu, Busan 49315, Korea

***Faculty of Design, Kyushu University
4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan

Received:
December 12, 2022
Accepted:
April 2, 2023
Published:
June 20, 2023
Keywords:
exoskeletons, partial assistance, external force, electromyography
Abstract

Technology advancement has enabled the development of robotic exoskeletons that are portable, powerful, and sufficiently smart to be of practical use in the real world. These devices provide partial assistive forces that increase their user’s physical strength to better meet the demands of everyday life and have potential applications in various settings. Examples include helping older adults maintain their independence and preventing musculoskeletal injuries among factory workers. Although great strides have been made to improve the performance and usability of these devices, human characteristics and the way humans adapt to the external assistive forces from these devices are rarely explicitly considered in their development. A common assumption is that if the provided assistive forces are aligned with the intent of users, users can easily “switch off” their muscles and effectively utilize this assistive force. In this review, we demonstrate that human adaptations to external assistive forces can lead to inefficiencies or conflicts that decrease the effectiveness of robotic exoskeletons. We then discuss the motor characteristics of human adaptations to external assistive forces.

Ineffectiveness of assistive forces

Ineffectiveness of assistive forces

Cite this article as:
W. Yeoh, J. Choi, P. Loh, O. Fukuda, and S. Muraki, “Motor Characteristics of Human Adaptations to External Assistive Forces,” J. Robot. Mechatron., Vol.35 No.3, pp. 547-555, 2023.
Data files:
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