Development of a measurement and real-time display system for kinematics and muscle synergy of gait

Arito Yozu, Tetsuro Funato, Dai Owaki, Nobuhiko Haga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recently, muscle synergy has drawn increasing attention to understand human movement. In this study, we present a system that is able to display concurrently both the kinematics (stick pictures) and muscle synergy of gait. Our system has been developed at the Rehabilitation Center of the University of Tokyo Hospital comprising a kinematics measurement device and muscle synergy measurement device for gait. The kinematics is measured with a three-dimensional motion analysis system. Infrared reflective markers are attached according to the Plug-in Gait marker set. The trajectory of the reflective markers can be displayed in real time during measurements. The muscle synergy is calculated from myoelectric activity obtained from surface electromyography. Surface electrodes are attached to 16 lower-limb muscles. The calculation of the muscle synergy from the myoelectric activity is conducted with originally developed software that uses non-negative matrix factorization. The calculation results of the muscle synergy can be displayed in almost real time. A common trigger signal is send both to the motion analysis system and the synergy calculating software for synchronization. Using this as a visual feedback system, patients can attempt to correct their gait abnormality. Thus, this system is not only a measurement device but may also be applied as a therapeutic device.

Original languageEnglish
Title of host publication2015 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479966783
DOIs
Publication statusPublished - 2016 Mar 21
EventInternational Symposium on Micro-NanoMechatronics and Human Science, MHS 2015 - Nagoya, Japan
Duration: 2015 Nov 232015 Nov 25

Publication series

Name2015 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2015

Other

OtherInternational Symposium on Micro-NanoMechatronics and Human Science, MHS 2015
CountryJapan
CityNagoya
Period15/11/2315/11/25

ASJC Scopus subject areas

  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Biotechnology
  • Education

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