Evidence for a relationship between abnormal static torque synergies and disturbances of planar arm movements in hemiparetic subjects: Preliminary results

Julius P A Dewald*, R. F. Beer

*Corresponding author for this work

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

Abstract

The purpose of this study was to explore the relationship between abnormal static torque synergies and disturbances of planar arm movements in stroke subjects (n = 3). Abnormal static torque synergies (e.g. coupling between shoulder abduction-external rotation and elbow flexion torques) were identified in the impaired arm of all three subjects using 6 degree of freedom load cell measurements. As a result, the ability of subjects to produce static elbow extension and shoulder abduction torques simultaneously was severely compromised. Based on comparisons of actively and passively supported arm movements, similar manifestations of these abnormal synergies were present under dynamic conditions. Disturbances of actively supported reaching movements (which required shoulder abduction and external rotation torques) were associated with a reduction in the elbow extension torque, relative to the passively supported condition. The scientific and clinical implications of these preliminary findings will be discussed.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Number of pages1
Volume1
ISBN (Print)0780356756
StatePublished - Dec 1 1999
EventProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA
Duration: Oct 13 1999Oct 16 1999

Other

OtherProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
CityAtlanta, GA, USA
Period10/13/9910/16/99

ASJC Scopus subject areas

  • Bioengineering

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