Effects of unilateral, bilateral in-phase and anti-phase modes of a functional task on non-paretic arm kinematics in acute stroke:

Choo Pei Ling, Helen L. Gallagher, Jacqui Morris, Frederike Van Wijck

    Research output: Contribution to journalMeeting abstractpeer-review

    Abstract

    Introduction: Arm dysfunction is not confined to the contralesional arm. Understanding intralimb
    kinematics of the non-paretic arm in stroke individuals provides insight to mechanisms of action
    underlying bilateral upper limb training (BT). This study aimed to compare the effects of unilateral,
    bilateral in-phase and anti-phase modes of a functional task on dominant/non-paretic arm kinematics in
    healthy and acute stroke individuals respectively.
    Methods: 7 healthy and 13 acute stroke individuals underwent 3D motion capture of unilateral,
    bilateral in-phase and anti-phase modes of a functional grasp task. Intralimb kinematics was assessed
    through movement time, peak velocity, movement smoothness and movement directness.
    Results: In healthy individuals, dominant arm movement displayed no significant difference in any of
    the intralimb kinematic measures between unilateral, bilateral in-phase and bilateral anti-phase grasp
    task. In acute stroke individuals, non-paretic arm movement became significantly slower (Z ¼ 3.180,
    p ¼ 0.001), jerkier (Z ¼ 3.184, p ¼ 0.001) and with lower peak velocity (Z ¼ 3.110, p ¼ 0.002)
    during bilateral in-phase grasp task compared to unilateral task mode. Furthermore, in acute stroke
    individuals, non-paretic arm movement became significantly slower (Z ¼ 3.181, p ¼ 0.001) and jerkier (Z ¼ 3.181, p ¼ 0.001) during bilateral anti-phase grasp task compared to unilateral task mode.
    Conclusion: Bilateral in-phase and anti-phase task modes altered non-paretic arm kinematics in
    stroke individuals, but not dominant arm kinematics in healthy individuals. Specifically, non-paretic
    arm kinematics in stroke individuals became slower and jerkier during bilateral in-phase and anti-phase
    grasp task compared to unilateral task modes. Kinematic responses to bilateral task modes is affected
    by stroke. Therapists should note detrimental performance effects of bilateral training modes on the
    non-paretic arm.
    Original languageEnglish
    Pages (from-to)10-65
    Number of pages1
    JournalInternational Journal of Stroke
    Volume13
    Issue number35
    DOIs
    Publication statusPublished - 2018
    EventUK Stroke Forum 2018 - Telford
    Duration: 4 Dec 2018 → …

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