Tremor during movement correlates well with disability in people with essential tremor
Identifieur interne : 001298 ( Main/Exploration ); précédent : 001297; suivant : 001299Tremor during movement correlates well with disability in people with essential tremor
Auteurs : Kathleen E. Norman [Canada] ; Shauna N. D'Amboise [Canada] ; Giovanna Pari [Canada] ; Martin E. Héroux [Canada]Source :
- Movement Disorders [ 0885-3185 ] ; 2011-09.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Adult, Aged, Disability, Disability Evaluation, Disabled Persons, Essential Tremor (physiopathology), Evaluation, Female, Hand function, Humans, Male, Middle Aged, Movement (physiology), Nervous system diseases, Posture, Power spectrum, Spectral analysis, Statistics as Topic, Tremor, disability evaluation, essential tremor, hand function, power spectral analysis.
- MESH :
- physiology : Movement.
- physiopathology : Essential Tremor.
- Adult, Aged, Disability Evaluation, Disabled Persons, Female, Humans, Male, Middle Aged, Posture, Statistics as Topic.
Abstract
Essential tremor is the most common movement disorder, typically characterized by the presence of both postural and kinetic tremor of the hand. In recent studies, we described the effects of altering force and load conditions on tremor amplitude and power in people with essential tremor. In the same participants, we also measured tremor‐related functional disability. In this article we report on the current study on correlations of measures of tremor severity with those of tremor‐related functional disability. Twenty‐one participants with essential tremor had tremor measured in their more tremorous hand. Power spectral and amplitude measures of tremor were calculated for each of 16 conditions: force tremor at 4 submaximal force levels, postural tremor in unloaded and 3 submaximal load conditions, and kinetic tremor in unloaded and 3 submaximal load conditions for each of concentric and eccentric contractions of the wrist extensors. Participants were rated on the hand items of the Fahn‐Tolosa‐Marin rating scale and timed on the unilateral hand tasks of the Test Évaluant la Performance des Membres supérieurs des Personnes Âgées. The most consistently high and significant correlations were found between kinetic tremor measures and the hand task scores and tremor‐B scores (r = 0.548–0.780, P < .01). Postural tremor measures correlated with disability measures only in loaded conditions, most consistently with the hand task measures (r = 0.640–0.725, P < .01). Thus, measures of kinetic tremor and loaded postural tremor, but not unloaded postural tremor or force tremor, relate well to disability captured with dynamic tasks. © 2011 Movement Disorder Society
Url:
DOI: 10.1002/mds.23811
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="2011-09">2011-09</date><biblScope unit="vol">26</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="2088">2088</biblScope><biblScope unit="page" to="2094">2094</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">F0A8E75DC1A556E37308853CE406042706CAC7DC</idno><idno type="DOI">10.1002/mds.23811</idno><idno type="ArticleID">MDS23811</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Disability</term><term>Disability Evaluation</term><term>Disabled Persons</term><term>Essential Tremor (physiopathology)</term><term>Evaluation</term><term>Female</term><term>Hand function</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Movement (physiology)</term><term>Nervous system diseases</term><term>Posture</term><term>Power spectrum</term><term>Spectral analysis</term><term>Statistics as Topic</term><term>Tremor</term><term>disability evaluation</term><term>essential tremor</term><term>hand function</term><term>power spectral analysis</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Movement</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Essential Tremor</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Disability Evaluation</term><term>Disabled Persons</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Posture</term><term>Statistics as Topic</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Analyse spectrale</term><term>Evaluation</term><term>Fonction main</term><term>Incapacité</term><term>Pathologie du système nerveux</term><term>Spectre puissance</term><term>Tremblement</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Essential tremor is the most common movement disorder, typically characterized by the presence of both postural and kinetic tremor of the hand. In recent studies, we described the effects of altering force and load conditions on tremor amplitude and power in people with essential tremor. In the same participants, we also measured tremor‐related functional disability. In this article we report on the current study on correlations of measures of tremor severity with those of tremor‐related functional disability. Twenty‐one participants with essential tremor had tremor measured in their more tremorous hand. Power spectral and amplitude measures of tremor were calculated for each of 16 conditions: force tremor at 4 submaximal force levels, postural tremor in unloaded and 3 submaximal load conditions, and kinetic tremor in unloaded and 3 submaximal load conditions for each of concentric and eccentric contractions of the wrist extensors. Participants were rated on the hand items of the Fahn‐Tolosa‐Marin rating scale and timed on the unilateral hand tasks of the Test Évaluant la Performance des Membres supérieurs des Personnes Âgées. The most consistently high and significant correlations were found between kinetic tremor measures and the hand task scores and tremor‐B scores (r = 0.548–0.780, P < .01). Postural tremor measures correlated with disability measures only in loaded conditions, most consistently with the hand task measures (r = 0.640–0.725, P < .01). Thus, measures of kinetic tremor and loaded postural tremor, but not unloaded postural tremor or force tremor, relate well to disability captured with dynamic tasks. © 2011 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Norman, Kathleen E" sort="Norman, Kathleen E" uniqKey="Norman K" first="Kathleen E." last="Norman">Kathleen E. Norman</name></noRegion><name sortKey="D Amboise, Shauna N" sort="D Amboise, Shauna N" uniqKey="D Amboise S" first="Shauna N." last="D'Amboise">Shauna N. D'Amboise</name><name sortKey="D Amboise, Shauna N" sort="D Amboise, Shauna N" uniqKey="D Amboise S" first="Shauna N." last="D'Amboise">Shauna N. D'Amboise</name><name sortKey="Heroux, Martin E" sort="Heroux, Martin E" uniqKey="Heroux M" first="Martin E." last="Héroux">Martin E. Héroux</name><name sortKey="Norman, Kathleen E" sort="Norman, Kathleen E" uniqKey="Norman K" first="Kathleen E." last="Norman">Kathleen E. Norman</name><name sortKey="Pari, Giovanna" sort="Pari, Giovanna" uniqKey="Pari G" first="Giovanna" last="Pari">Giovanna Pari</name><name sortKey="Pari, Giovanna" sort="Pari, Giovanna" uniqKey="Pari G" first="Giovanna" last="Pari">Giovanna Pari</name><name sortKey="Pari, Giovanna" sort="Pari, Giovanna" uniqKey="Pari G" first="Giovanna" last="Pari">Giovanna Pari</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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