Coupling between limb tremor and postural sway in Parkinson's disease
Identifieur interne : 002918 ( Main/Exploration ); précédent : 002917; suivant : 002919Coupling between limb tremor and postural sway in Parkinson's disease
Auteurs : Graham Kerr [Australie] ; Steven Morrison [États-Unis] ; Peter Silburn [Australie]Source :
- Movement Disorders [ 0885-3185 ] ; 2008-02-15.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Aged, Coherence, Coupling, Equilibrium disorder, Female, Functional Laterality, Humans, Male, Middle Aged, Nervous system diseases, Nonlinear Dynamics, Oscillation, Parkinson Disease (complications), Parkinson disease, Parkinson's disease, Postural Balance (physiology), Posture (physiology), Pressure, Stability, Tremor, Tremor (etiology), coherence., oscillations, postural stability, tremor.
- MESH :
- complications : Parkinson Disease.
- etiology : Tremor.
- physiology : Postural Balance, Posture.
- Aged, Female, Functional Laterality, Humans, Male, Middle Aged, Nonlinear Dynamics, Pressure.
Abstract
Increased tremor and postural instability are motor problems commonly associated with Parkinson's disease (PD). Despite the similarity between these oscillatory forms, little is known about the relation between them, especially for individuals with enhanced tremor. This study was designed to examine the nature of any relation between center of pressure (COP) excursions and postural/resting limb tremor of young, older individuals, and Parkinsonian participants in their different medication states. The resting and postural tremor for the PD participants was characterized by a single, prominent peak frequency between 4 and 7 Hz. The postural tremor for young/older participants contained smaller peaks between 1 to 4 and 7 to 12 Hz although no prominent peak was seen in their resting tremor. The AP and ML COP dynamics of all participants was characterized by a major peak between 0.1 and 0.5 Hz. An additional peak was observed in the COP output of the PD participants between 4 and 7 Hz. While no tremor‐COP coupling was observed for the young/old groups, coherence analysis revealed a significant degree of coupling between COP motion and tremor between 4 and 7 Hz for PD participants. These results highlight that the amplified tremor in PD can manifest itself in COP dynamics. This finding may have implications for postural stability for this patient group. © 2007 Movement Disorder Society
Url:
DOI: 10.1002/mds.21851
Affiliations:
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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="2008-02-15">2008-02-15</date><biblScope unit="vol">23</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="386">386</biblScope><biblScope unit="page" to="394">394</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">75FB162BFB8474E0316484A48FCA762AB0932CF0</idno><idno type="DOI">10.1002/mds.21851</idno><idno type="ArticleID">MDS21851</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Coherence</term><term>Coupling</term><term>Equilibrium disorder</term><term>Female</term><term>Functional Laterality</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Nervous system diseases</term><term>Nonlinear Dynamics</term><term>Oscillation</term><term>Parkinson Disease (complications)</term><term>Parkinson disease</term><term>Parkinson's disease</term><term>Postural Balance (physiology)</term><term>Posture (physiology)</term><term>Pressure</term><term>Stability</term><term>Tremor</term><term>Tremor (etiology)</term><term>coherence.</term><term>oscillations</term><term>postural stability</term><term>tremor</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Tremor</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Postural Balance</term><term>Posture</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Female</term><term>Functional Laterality</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Nonlinear Dynamics</term><term>Pressure</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Cohérence</term><term>Couplage</term><term>Maladie de Parkinson</term><term>Oscillation</term><term>Pathologie du système nerveux</term><term>Stabilité</term><term>Tremblement</term><term>Trouble de l'équilibre</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Increased tremor and postural instability are motor problems commonly associated with Parkinson's disease (PD). Despite the similarity between these oscillatory forms, little is known about the relation between them, especially for individuals with enhanced tremor. This study was designed to examine the nature of any relation between center of pressure (COP) excursions and postural/resting limb tremor of young, older individuals, and Parkinsonian participants in their different medication states. The resting and postural tremor for the PD participants was characterized by a single, prominent peak frequency between 4 and 7 Hz. The postural tremor for young/older participants contained smaller peaks between 1 to 4 and 7 to 12 Hz although no prominent peak was seen in their resting tremor. The AP and ML COP dynamics of all participants was characterized by a major peak between 0.1 and 0.5 Hz. An additional peak was observed in the COP output of the PD participants between 4 and 7 Hz. While no tremor‐COP coupling was observed for the young/old groups, coherence analysis revealed a significant degree of coupling between COP motion and tremor between 4 and 7 Hz for PD participants. These results highlight that the amplified tremor in PD can manifest itself in COP dynamics. This finding may have implications for postural stability for this patient group. © 2007 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Australie</li><li>États-Unis</li></country><region><li>Virginie</li></region></list><tree><country name="Australie"><noRegion><name sortKey="Kerr, Graham" sort="Kerr, Graham" uniqKey="Kerr G" first="Graham" last="Kerr">Graham Kerr</name></noRegion><name sortKey="Kerr, Graham" sort="Kerr, Graham" uniqKey="Kerr G" first="Graham" last="Kerr">Graham Kerr</name><name sortKey="Silburn, Peter" sort="Silburn, Peter" uniqKey="Silburn P" first="Peter" last="Silburn">Peter Silburn</name><name sortKey="Silburn, Peter" sort="Silburn, Peter" uniqKey="Silburn P" first="Peter" last="Silburn">Peter Silburn</name><name sortKey="Silburn, Peter" sort="Silburn, Peter" uniqKey="Silburn P" first="Peter" last="Silburn">Peter Silburn</name></country><country name="États-Unis"><region name="Virginie"><name sortKey="Morrison, Steven" sort="Morrison, Steven" uniqKey="Morrison S" first="Steven" last="Morrison">Steven Morrison</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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