Interlimb coordination in Parkinson's disease
Identifieur interne : 000E70 ( Istex/Curation ); précédent : 000E69; suivant : 000E71Interlimb coordination in Parkinson's disease
Auteurs : Lazarus [États-Unis] ; George E. Stelmach [États-Unis]Source :
- Movement Disorders [ 0885-3185 ] ; 1992.
English descriptors
Abstract
This study examined the degree to which Parkinson's disease (PD) patients could “spatially link” the upper limbs to facilitate the performance of bimanual simultaneous movements. Six right‐handed PD patients, and seven normal age‐ and sex‐matched controls performed three different tasks: (a) an isotonic elbow flexion as rapidly as possible through an angle of 30°; (b) an isometric contraction of the flexor muscles at the elbow joint to 40% and 60% of maximal volitional force (MVF) for a period of 5 s; (c) an isometric contraction for 2.5 s with one limb, then simultaneously performing an isotonic flexion with the contralateral limb while maintaining the isometric contraction for 2.5 s more. As expected, PD patients were significantly slower in performing the isotonic movement and produced lower peak velocities than the controls. More importantly, the two groups were differentially affected during the bimanual condition. In normals, movement time decreased and peak velocity increased in the bimanual condition. In contrast, PD patients showed increased movement times and sometimes decreased peak velocities in the bimanual condition. The results suggest that normal subjects utilize bilateral outflow to symmetrical muscle groups to synchronize the two limbs in the bimanual task, whereas PD patients dissociate the two limbs.
Url:
DOI: 10.1002/mds.870070211
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Stelmach</name><affiliation wicri:level="1"><mods:affiliation>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:121B61439004B14DDD004F5837A0A7B536396A66</idno><date when="1992" year="1992">1992</date><idno type="doi">10.1002/mds.870070211</idno><idno type="url">https://api.istex.fr/document/121B61439004B14DDD004F5837A0A7B536396A66/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000E70</idno><idno type="wicri:Area/Istex/Curation">000E70</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Interlimb coordination in Parkinson's disease</title><author><name sortKey="Lazarus" sort="Lazarus" uniqKey="Lazarus" last="Lazarus">Lazarus</name><affiliation wicri:level="1"><mods:affiliation>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin</wicri:regionArea></affiliation></author><author><name sortKey="Stelmach, George E" sort="Stelmach, George E" uniqKey="Stelmach G" first="George E." last="Stelmach">George E. Stelmach</name><affiliation wicri:level="1"><mods:affiliation>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin, U.S.A.</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Motor Behavior Laboratory, University of Wisconsin–Madison, Madison, Wisconsin</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="sub">Official Journal of the Movement Disorder Society</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="1992">1992</date><biblScope unit="vol">7</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="159">159</biblScope><biblScope unit="page" to="170">170</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">121B61439004B14DDD004F5837A0A7B536396A66</idno><idno type="DOI">10.1002/mds.870070211</idno><idno type="ArticleID">MDS870070211</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bimanual simultaneous movements</term><term>Isometric contraction</term><term>Isotonic movement</term><term>Motor control</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study examined the degree to which Parkinson's disease (PD) patients could “spatially link” the upper limbs to facilitate the performance of bimanual simultaneous movements. Six right‐handed PD patients, and seven normal age‐ and sex‐matched controls performed three different tasks: (a) an isotonic elbow flexion as rapidly as possible through an angle of 30°; (b) an isometric contraction of the flexor muscles at the elbow joint to 40% and 60% of maximal volitional force (MVF) for a period of 5 s; (c) an isometric contraction for 2.5 s with one limb, then simultaneously performing an isotonic flexion with the contralateral limb while maintaining the isometric contraction for 2.5 s more. As expected, PD patients were significantly slower in performing the isotonic movement and produced lower peak velocities than the controls. More importantly, the two groups were differentially affected during the bimanual condition. In normals, movement time decreased and peak velocity increased in the bimanual condition. In contrast, PD patients showed increased movement times and sometimes decreased peak velocities in the bimanual condition. The results suggest that normal subjects utilize bilateral outflow to symmetrical muscle groups to synchronize the two limbs in the bimanual task, whereas PD patients dissociate the two limbs.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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