Deficits in Performance on a Mechanically Coupled Asymmetrical Bilateral Task in Chronic Stroke Survivors with Mild Unilateral Paresis
Autor: | David C. Good, Shanie A. L. Jayasinghe, Candice Maenza, Robert L. Sainburg |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
030506 rehabilitation
medicine.medical_specialty Activities of daily living Physics and Astronomy (miscellaneous) General Mathematics bimanual Lateralization of brain function Task (project management) 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Computer Science (miscellaneous) medicine motor control QA1-939 lateralization Chronic stroke Paresis Unilateral paresis bilateral coordination business.industry Motor control Hemiparesis Chemistry (miscellaneous) stabilizing medicine.symptom 0305 other medical science business 030217 neurology & neurosurgery Mathematics |
Zdroj: | Symmetry, Vol 13, Iss 1366, p 1366 (2021) Symmetry Volume 13 Issue 8 |
ISSN: | 2073-8994 |
Popis: | Typical upper limb-mediated activities of daily living involve coordination of both arms, often requiring distributed contributions to mechanically coupled tasks, such as stabilizing a loaf of bread with one hand while slicing with the other. We sought to examine whether mild paresis in one arm results in deficits in performance on a bilateral mechanically coupled task. We designed a virtual reality-based task requiring one hand to stabilize against a spring load that varies with displacement of the other arm. We recruited 15 chronic stroke survivors with mild hemiparesis and 7 age-matched neurologically intact adults. We found that stroke survivors produced less linear reaching movements and larger initial direction errors compared to controls (p < 0.05), and that contralesional hand performance was less linear than that of ipsilesional hand. We found a hand × group interaction (p < 0.05) for peak acceleration of the stabilizing hand, such that the dominant right hand of controls stabilized less effectively than the nondominant left hand while stroke survivors showed no differences between the hands. Our results indicate that chronic stroke survivors with mild hemiparesis show significant deficits in reaching aspects of bilateral coordination, but no deficits in stabilizing against a movement-dependent spring load in this task. |
Databáze: | OpenAIRE |
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