Movement Disorders (revue)

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Locomotion Speed Determines Gait Variability in Cerebellar Ataxia and Vestibular Failure

Identifieur interne : 001070 ( Main/Exploration ); précédent : 001069; suivant : 001071

Locomotion Speed Determines Gait Variability in Cerebellar Ataxia and Vestibular Failure

Auteurs : Roman Schniepp [Allemagne] ; Maximilian Wuehr [Allemagne] ; Maximilian Neuhaeusser [Allemagne] ; Maria Kamenova [Allemagne] ; Konstantin Dimitriadis [Allemagne] ; Thomas Klopstock [Allemagne] ; M. Strupp [Allemagne] ; Thomas Brandt [Allemagne] ; Klaus Jahn [Allemagne]

Source :

RBID : Pascal:12-0106492

Descripteurs français

English descriptors

Abstract

Temporal gait variability is a critical parameter in patients with balance problems. Increased magnitude of temporal gait variability corresponds to a higher risk of falls. The purpose of this study was to investigate the influence of walking speed on temporal stride-to-stride variability in patients with cerebellar and vestibular deficits. A GAITRite system was used to analyze the gait of 40 patients with cerebellar ataxia, 22 patients with bilateral vestibular failure, and 51 healthy subjects over the entire range of the individual's speed capacity. The coefficient of variability of stride time was calculated for each walk. Temporal gait variability was increased in cerebellar patients and vestibular patients. The magnitude of this variability depended on walking speed in a disease-specific manner. In patients with cerebellar ataxia, variability was increased during slow (8.4 ± 5.3%, P < .01) and fast (7.9 ± 6.4%, P < .01) walking speed but was normal during preferred walking speed. This resulted in a speed-related U-shaped function of stride-time variability. Patients with vestibular failure had increased variability during slow walking (9.9 ± 4.3%, P < .01). During walking with medium and fast walking speed, stride time variability was normal. Minimal temporal gait variability appears to be attractive for the locomotor system in cerebellar patients because these patients preferred to walk at a velocity associated with minimal stride-time variability. In contrast to previous studies, vestibular patients accelerate rather than decelerate gait to achieve dynamic stability. This may be explained by reduced sensory integration during fast locomotion.


Affiliations:


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Le document en format XML

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<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Allemagne</country>
<placeName>
<region type="land" nuts="1">Bavière</region>
<region type="district" nuts="2">District de Haute-Bavière</region>
<settlement type="city">Munich</settlement>
</placeName>
<orgName type="university">Université Louis-et-Maximilien de Munich</orgName>
</affiliation>
<affiliation wicri:level="3">
<inist:fA14 i1="02">
<s1>Integrated Research and Treatment Center for Vertigo, Balance and Ocular Motor Disorders (IFB
<sup>LMU</sup>
), University of Munich</s1>
<s2>Munich</s2>
<s3>DEU</s3>
<sZ>1 aut.</sZ>
<sZ>7 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Allemagne</country>
<placeName>
<region type="land" nuts="1">Bavière</region>
<region type="district" nuts="2">District de Haute-Bavière</region>
<settlement type="city">Munich</settlement>
</placeName>
</affiliation>
</author>
</analytic>
<series>
<title level="j" type="main">Movement disorders</title>
<title level="j" type="abbreviated">Mov. disord.</title>
<idno type="ISSN">0885-3185</idno>
<imprint>
<date when="2012">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt>
<title level="j" type="main">Movement disorders</title>
<title level="j" type="abbreviated">Mov. disord.</title>
<idno type="ISSN">0885-3185</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Cerebellar ataxia</term>
<term>Locomotion</term>
<term>Nervous system diseases</term>
<term>Speed</term>
<term>Variability</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Pathologie du système nerveux</term>
<term>Locomotion</term>
<term>Vitesse déplacement</term>
<term>Variabilité</term>
<term>Ataxie cérébelleuse</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">Temporal gait variability is a critical parameter in patients with balance problems. Increased magnitude of temporal gait variability corresponds to a higher risk of falls. The purpose of this study was to investigate the influence of walking speed on temporal stride-to-stride variability in patients with cerebellar and vestibular deficits. A GAITRite system was used to analyze the gait of 40 patients with cerebellar ataxia, 22 patients with bilateral vestibular failure, and 51 healthy subjects over the entire range of the individual's speed capacity. The coefficient of variability of stride time was calculated for each walk. Temporal gait variability was increased in cerebellar patients and vestibular patients. The magnitude of this variability depended on walking speed in a disease-specific manner. In patients with cerebellar ataxia, variability was increased during slow (8.4 ± 5.3%, P < .01) and fast (7.9 ± 6.4%, P < .01) walking speed but was normal during preferred walking speed. This resulted in a speed-related U-shaped function of stride-time variability. Patients with vestibular failure had increased variability during slow walking (9.9 ± 4.3%, P < .01). During walking with medium and fast walking speed, stride time variability was normal. Minimal temporal gait variability appears to be attractive for the locomotor system in cerebellar patients because these patients preferred to walk at a velocity associated with minimal stride-time variability. In contrast to previous studies, vestibular patients accelerate rather than decelerate gait to achieve dynamic stability. This may be explained by reduced sensory integration during fast locomotion.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Allemagne</li>
</country>
<region>
<li>Bavière</li>
<li>District de Haute-Bavière</li>
</region>
<settlement>
<li>Munich</li>
</settlement>
<orgName>
<li>Université Louis-et-Maximilien de Munich</li>
</orgName>
</list>
<tree>
<country name="Allemagne">
<region name="Bavière">
<name sortKey="Schniepp, Roman" sort="Schniepp, Roman" uniqKey="Schniepp R" first="Roman" last="Schniepp">Roman Schniepp</name>
</region>
<name sortKey="Brandt, Thomas" sort="Brandt, Thomas" uniqKey="Brandt T" first="Thomas" last="Brandt">Thomas Brandt</name>
<name sortKey="Brandt, Thomas" sort="Brandt, Thomas" uniqKey="Brandt T" first="Thomas" last="Brandt">Thomas Brandt</name>
<name sortKey="Dimitriadis, Konstantin" sort="Dimitriadis, Konstantin" uniqKey="Dimitriadis K" first="Konstantin" last="Dimitriadis">Konstantin Dimitriadis</name>
<name sortKey="Jahn, Klaus" sort="Jahn, Klaus" uniqKey="Jahn K" first="Klaus" last="Jahn">Klaus Jahn</name>
<name sortKey="Jahn, Klaus" sort="Jahn, Klaus" uniqKey="Jahn K" first="Klaus" last="Jahn">Klaus Jahn</name>
<name sortKey="Kamenova, Maria" sort="Kamenova, Maria" uniqKey="Kamenova M" first="Maria" last="Kamenova">Maria Kamenova</name>
<name sortKey="Klopstock, Thomas" sort="Klopstock, Thomas" uniqKey="Klopstock T" first="Thomas" last="Klopstock">Thomas Klopstock</name>
<name sortKey="Neuhaeusser, Maximilian" sort="Neuhaeusser, Maximilian" uniqKey="Neuhaeusser M" first="Maximilian" last="Neuhaeusser">Maximilian Neuhaeusser</name>
<name sortKey="Schniepp, Roman" sort="Schniepp, Roman" uniqKey="Schniepp R" first="Roman" last="Schniepp">Roman Schniepp</name>
<name sortKey="Strupp, M" sort="Strupp, M" uniqKey="Strupp M" first="M." last="Strupp">M. Strupp</name>
<name sortKey="Strupp, M" sort="Strupp, M" uniqKey="Strupp M" first="M." last="Strupp">M. Strupp</name>
<name sortKey="Wuehr, Maximilian" sort="Wuehr, Maximilian" uniqKey="Wuehr M" first="Maximilian" last="Wuehr">Maximilian Wuehr</name>
</country>
</tree>
</affiliations>
</record>

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