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Sensors 2019, 19(1), 195; https://doi.org/10.3390/s19010195

Towards Wearable Comprehensive Capture and Analysis of Skeletal Muscle Activity during Human Locomotion

1
Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
2
Department of Rehabilitation, Jönköping University, 551 11 Jönköping, Sweden
3
Guangdong Work Injury Rehabilitation Center, Guangzhou 510440, China
*
Author to whom correspondence should be addressed.
Received: 29 November 2018 / Revised: 22 December 2018 / Accepted: 4 January 2019 / Published: 7 January 2019
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis 2018)
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Abstract

Background: Motion capture and analyzing systems are essential for understanding locomotion. However, the existing devices are too cumbersome and can be used indoors only. A newly-developed wearable motion capture and measurement system with multiple sensors and ultrasound imaging was introduced in this study. Methods: In ten healthy participants, the changes in muscle area and activity of gastrocnemius, plantarflexion and dorsiflexion of right leg during walking were evaluated by the developed system and the Vicon system. The existence of significant changes in a gait cycle, comparison of the ankle kinetic data captured by the developed system and the Vicon system, and test-retest reliability (evaluated by the intraclass correlation coefficient, ICC) in each channel’s data captured by the developed system were examined. Results: Moderate to good test-retest reliability of various channels of the developed system (0.512 ≤ ICC ≤ 0.988, p < 0.05), significantly high correlation between the developed system and Vicon system in ankle joint angles (0.638R ≤ 0.707, p < 0.05), and significant changes in muscle activity of gastrocnemius during a gait cycle (p < 0.05) were found. Conclusion: A newly developed wearable motion capture and measurement system with ultrasound imaging that can accurately capture the motion of one leg was evaluated in this study, which paves the way towards real-time comprehensive evaluation of muscles and joint motions during different activities in both indoor and outdoor environments. View Full-Text
Keywords: motion capture and analysis; wearable; ultrasound imaging; electromyography (EMG); sonomyograph (SMG); mechanomyography (MMG); plantar force; joint angle motion capture and analysis; wearable; ultrasound imaging; electromyography (EMG); sonomyograph (SMG); mechanomyography (MMG); plantar force; joint angle
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ma, C. .-H.; Ling, Y.T.; Shea, Q.T.K.; Wang, L.-K.; Wang, X.-Y.; Zheng, Y.-P. Towards Wearable Comprehensive Capture and Analysis of Skeletal Muscle Activity during Human Locomotion. Sensors 2019, 19, 195.

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