Stroke impairs the control of isometric forces and muscle activations in the ipsilesional arm.

ABSTRACT: Stroke often impairs the control of the contralesional arm, thus most survivors rely on the ipsilesional arm to perform daily living activities that require an efficient control of movements and forces. Whereas the ipsilesional arm is often called 'unaffected' or 'unimpaired', several studies suggested that during dynamic tasks its kinematics and joint torques are altered. Is stroke also affecting the ability of the ipsilesional arm to produce isometric force, as when pushing or pulling a handle? Here, we address this question by analyzing behavioral performance and muscles' activity when subjects applied an isometric force of 10 N in eight coplanar directions. We found that stroke affected the ability to apply well-controlled isometric forces with the ipsilesional arm, although to a minor

SUBMITTER: Pellegrino L 

PROVIDER: S-EPMC8448776 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature