The Effect of CAREX on muscle activation during a point-To-point reaching task

Xin Jin, Viswanath Aluru, Preeti Raghavan, Sunil K. Agrawal

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

Abstract

Exoskeletons have been used successfully for functional training of human motions. Our designs of the Cable-driven Arm Exoskeleton (CAREX) are targeted to improve arm function in patients with stroke. In this study, we focus on how muscle activation patterns of subjects change during movements with and without CAREX. Our goal was to evaluate whether CAREX distorts the natural pattern of EMG activity in healthy human subjects during arm movements. Eight healthy subjects performed point-To-point reaching tasks under two conditions: (a) with or without CAREX, and (b) with or without a 5 lb weight attached to their wrist. The EMG signals of 10 muscles were recorded and processed. The results showed that (i) EMG pattern of the subjects while wearing CAREX and while not wearing CAREX showed a high correlation, suggesting little alteration to normal EMG patterns while wearing CAREX; (ii) The subjects showed significantly lower muscle activation when they wore CAREX; (iii) The high correlation and the lower activation were observed in both the no weight condition and the 5 lb weight condition. Overall, the results suggest that CAREX can help subjects reduce the magnitude of muscle activation while preserving normal muscle activation patterns.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE/RAS-EMBS International Conference on Rehabilitation Robotics
Subtitle of host publicationEnabling Technology Festival, ICORR 2015
EditorsDavid Braun, Haoyong Yu, Domenico Campolo
PublisherIEEE Computer Society
Pages73-78
Number of pages6
ISBN (Electronic)9781479918072
DOIs
StatePublished - Sep 28 2015
Externally publishedYes
Event14th IEEE/RAS-EMBS International Conference on Rehabilitation Robotics, ICORR 2015 - Singapore, Singapore
Duration: Aug 11 2015Aug 14 2015

Publication series

NameIEEE International Conference on Rehabilitation Robotics
Volume2015-September
ISSN (Print)1945-7898
ISSN (Electronic)1945-7901

Conference

Conference14th IEEE/RAS-EMBS International Conference on Rehabilitation Robotics, ICORR 2015
CountrySingapore
CitySingapore
Period8/11/158/14/15

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Rehabilitation
  • Electrical and Electronic Engineering

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