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Soleus H-reflex inhibition during gait initiation in Parkinson's disease.

Identifieur interne : 003113 ( PubMed/Curation ); précédent : 003112; suivant : 003114

Soleus H-reflex inhibition during gait initiation in Parkinson's disease.

Auteurs : Koichi Hiraoka [Japon] ; Yoshimi Matsuo ; Kazuo Abe

Source :

Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2005.

RBID : pubmed:15747362

English descriptors

KwdEn :
- Adult, Aged, Ankle Joint (physiopathology), Electromyography (methods), Female, Gait (physiology), H-Reflex (physiology), Humans, Male, Middle Aged, Muscle, Skeletal (physiopathology), Neural Inhibition (physiology), Parkinson Disease (physiopathology), Time Factors.
MESH :
- methods : Electromyography.
- physiology : Gait, H-Reflex, Neural Inhibition.
- physiopathology : Ankle Joint, Muscle, Skeletal, Parkinson Disease.
- Adult, Aged, Female, Humans, Male, Middle Aged, Time Factors.

Abstract

The soleus H-reflex excitability during gait initiation was investigated in Parkinson's disease. Eleven patients participated in this study. Patients stepped forward as soon as the start signal flashed. Soleus H-reflex was evoked from the trailing leg 100, 300, or 600 msec after the start signal. The electromyographic activity in the soleus muscle immediately before evoking the H-reflex and the ankle joint motion were recorded. The soleus H-reflex was inhibited 300 msec after the start signal. The amount of the soleus H-reflex inhibition was inversely correlated with the Hoehn and Yahr stage; Items 14, 29, and 31 of the Unified Parkinson's Disease Rating Scale; and the delay of the onset of the ankle dorsiflexion from the start signal. In contrast, the amount of electromyographic activity immediately before evoking the H-reflex was not significantly correlated with those measures but was significantly correlated with Item 22 of the Unified Parkinson's Disease Rating Scale. Those findings indicate that the amount of soleus H-reflex inhibition during gait initiation depends on the severity of the disease. Abnormality of descending command may be related to the severity-dependent H-reflex inhibition.

DOI: 10.1002/mds.20448
PubMed: 15747362

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Le document en format XML

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<author><name sortKey="Hiraoka, Koichi" sort="Hiraoka, Koichi" uniqKey="Hiraoka K" first="Koichi" last="Hiraoka">Koichi Hiraoka</name>
<affiliation wicri:level="1"><nlm:affiliation>Department of Physical Therapy, Osaka Prefectural University, Osaka, Japan. hiraoka@osaka-hsu.ac.jp</nlm:affiliation>
<country xml:lang="fr">Japon</country>
<wicri:regionArea>Department of Physical Therapy, Osaka Prefectural University, Osaka</wicri:regionArea>
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<author><name sortKey="Matsuo, Yoshimi" sort="Matsuo, Yoshimi" uniqKey="Matsuo Y" first="Yoshimi" last="Matsuo">Yoshimi Matsuo</name>
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<author><name sortKey="Abe, Kazuo" sort="Abe, Kazuo" uniqKey="Abe K" first="Kazuo" last="Abe">Kazuo Abe</name>
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<term>Female</term>
<term>Gait (physiology)</term>
<term>H-Reflex (physiology)</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Muscle, Skeletal (physiopathology)</term>
<term>Neural Inhibition (physiology)</term>
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<front><div type="abstract" xml:lang="en">The soleus H-reflex excitability during gait initiation was investigated in Parkinson's disease. Eleven patients participated in this study. Patients stepped forward as soon as the start signal flashed. Soleus H-reflex was evoked from the trailing leg 100, 300, or 600 msec after the start signal. The electromyographic activity in the soleus muscle immediately before evoking the H-reflex and the ankle joint motion were recorded. The soleus H-reflex was inhibited 300 msec after the start signal. The amount of the soleus H-reflex inhibition was inversely correlated with the Hoehn and Yahr stage; Items 14, 29, and 31 of the Unified Parkinson's Disease Rating Scale; and the delay of the onset of the ankle dorsiflexion from the start signal. In contrast, the amount of electromyographic activity immediately before evoking the H-reflex was not significantly correlated with those measures but was significantly correlated with Item 22 of the Unified Parkinson's Disease Rating Scale. Those findings indicate that the amount of soleus H-reflex inhibition during gait initiation depends on the severity of the disease. Abnormality of descending command may be related to the severity-dependent H-reflex inhibition.</div>
</front>
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<Month>07</Month>
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<Title>Movement disorders : official journal of the Movement Disorder Society</Title>
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<ArticleTitle>Soleus H-reflex inhibition during gait initiation in Parkinson's disease.</ArticleTitle>
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<Abstract><AbstractText>The soleus H-reflex excitability during gait initiation was investigated in Parkinson's disease. Eleven patients participated in this study. Patients stepped forward as soon as the start signal flashed. Soleus H-reflex was evoked from the trailing leg 100, 300, or 600 msec after the start signal. The electromyographic activity in the soleus muscle immediately before evoking the H-reflex and the ankle joint motion were recorded. The soleus H-reflex was inhibited 300 msec after the start signal. The amount of the soleus H-reflex inhibition was inversely correlated with the Hoehn and Yahr stage; Items 14, 29, and 31 of the Unified Parkinson's Disease Rating Scale; and the delay of the onset of the ankle dorsiflexion from the start signal. In contrast, the amount of electromyographic activity immediately before evoking the H-reflex was not significantly correlated with those measures but was significantly correlated with Item 22 of the Unified Parkinson's Disease Rating Scale. Those findings indicate that the amount of soleus H-reflex inhibition during gait initiation depends on the severity of the disease. Abnormality of descending command may be related to the severity-dependent H-reflex inhibition.</AbstractText>
<CopyrightInformation>Copyright 2005 Movement Disorder Society.</CopyrightInformation>
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<MeshHeading><DescriptorName MajorTopicYN="N" UI="D009433">Neural Inhibition</DescriptorName>
<QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName MajorTopicYN="N" UI="D010300">Parkinson Disease</DescriptorName>
<QualifierName MajorTopicYN="Y" UI="Q000503">physiopathology</QualifierName>
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<MeshHeading><DescriptorName MajorTopicYN="N" UI="D013997">Time Factors</DescriptorName>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Soleus H-reflex inhibition during gait initiation in Parkinson's disease.

Soleus H-reflex inhibition during gait initiation in Parkinson's disease.

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki