MovDisordV3, Main, Curation, bibRecord, 004E88

The effect of changes in head posture on the patterns of muscle activity in cervical dystonia (CD)

Identifieur interne : 004E88 ( Main/Curation ); précédent : 004E87; suivant : 004E89

The effect of changes in head posture on the patterns of muscle activity in cervical dystonia (CD)

Auteurs : Aron S. Buchman [États-Unis] ; Cynthia L. Comella [États-Unis] ; Sue Leurgans [États-Unis] ; Glenn T. Stebbins [États-Unis] ; Christopher G. Goetz [États-Unis]

Source :

Movement Disorders [ 0885-3185 ] ; 1998-05.

RBID : ISTEX:22C8714249A65113E1EF911CDB32003944F18A71

Descripteurs français

Pascal (Inist)
- Dystonie, Electromyographie, Exploration, Homme, Muscle strié, Posture, Rachis cervical, Tête.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adult, Aged, Aged, 80 and over, Cervical dystonia, Cervical spine, Dystonia, Dystonia (diagnosis), Dystonia (physiopathology), Electromyography, Exploration, Female, Geste, Head, Head Movements (physiology), Human, Humans, Male, Middle Aged, Motor Neurons (physiology), Neck Muscles (innervation), Posture, Reference Values, Signal Processing, Computer-Assisted, Striated muscle, Torticollis (diagnosis), Torticollis (physiopathology).
MESH :
- diagnosis : Dystonia, Torticollis.
- innervation : Neck Muscles.
- physiology : Head Movements, Motor Neurons.
- physiopathology : Dystonia, Torticollis.
- Adult, Aged, Aged, 80 and over, Electromyography, Female, Humans, Male, Middle Aged, Reference Values, Signal Processing, Computer-Assisted.

Abstract

Twelve patients with cervical dystonia (CD) and predominant rotation were studied to determine the effects of changes in head posture on the specific patterns of cervical muscle activity. Turns analysis was used to quantify muscle activity underlying head rotation, recorded simultaneously from the agonist and antagonist muscle pairs bilaterally (sternocleidomastoid [SCM] and splenius [SPL]). Muscle activity was compared between the uncompensated dystonic posture and during the maintenance of midposition. In addition, patients were separated into two groups (geste = 6; no geste = 6) based on whether they had a clinically efficacious geste to determine the effect of geste on patterns of cervical muscle activity. Muscle activity was measured during the maintenance of midposition with and without a clinical or simulated geste. Differences in muscle activity between the groups and postures were compared using repeated measure analysis of variance (ANOVA) analyses. The four muscles tested showed a significant difference in muscle activity in the uncompensated dystonic posture as a result of the increased activity in the agonist muscle pair (SCM and SPL responsible for the dystonic posture) (EMG amplitude: F[1,11] = 18.81, p = 0.0012; EMG frequency: F[1,11] = 32.07, p = 0.0001). Maintaining the head in the midposition was associated with a significant reduction in muscle activity compared with the uncompensated dystonic posture (EMG amplitude: F[1,9] = 6.36, p < 0.033; EMG frequency: F[1,9] = 10.96, p < 0.0091). This reduction in midposition muscle activity was significantly greater in the agonist muscle pair (EMG amplitude: F[1,10] = 19.70, p = 0.0013; EMG frequency: F[1,10] = 44.67, p < 0.0001). In the patients with clinically effective geste, there was no additional reduction in muscle activity observed in the midposition when they performed their geste (EMG amplitude: F[1,9] = 4.63, p = 0.060; EMG frequency: F[1,9] = 1.22, p = 0.298). These findings suggest that CD with rotation is characterized by predominantly increased agonist muscle activation. Patients with CD retain the ability to modulate this involuntary agonist muscle activity to maintain the head in the midposition. The maintenance of the midposition does not seem to be facilitated by geste.

Url:

https://api.istex.fr/document/22C8714249A65113E1EF911CDB32003944F18A71/fulltext/pdf

DOI: 10.1002/mds.870130320

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ISTEX:22C8714249A65113E1EF911CDB32003944F18A71

Le document en format XML

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<term>Cervical spine</term>
<term>Dystonia</term>
<term>Dystonia (diagnosis)</term>
<term>Dystonia (physiopathology)</term>
<term>Electromyography</term>
<term>Exploration</term>
<term>Female</term>
<term>Geste</term>
<term>Head</term>
<term>Head Movements (physiology)</term>
<term>Human</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Motor Neurons (physiology)</term>
<term>Neck Muscles (innervation)</term>
<term>Posture</term>
<term>Reference Values</term>
<term>Signal Processing, Computer-Assisted</term>
<term>Striated muscle</term>
<term>Torticollis (diagnosis)</term>
<term>Torticollis (physiopathology)</term>
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<term>Torticollis</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Head Movements</term>
<term>Motor Neurons</term>
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<term>Torticollis</term>
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<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Electromyography</term>
<term>Female</term>
<term>Humans</term>
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<term>Electromyographie</term>
<term>Exploration</term>
<term>Homme</term>
<term>Muscle strié</term>
<term>Posture</term>
<term>Rachis cervical</term>
<term>Tête</term>
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<front><div type="abstract" xml:lang="en">Twelve patients with cervical dystonia (CD) and predominant rotation were studied to determine the effects of changes in head posture on the specific patterns of cervical muscle activity. Turns analysis was used to quantify muscle activity underlying head rotation, recorded simultaneously from the agonist and antagonist muscle pairs bilaterally (sternocleidomastoid [SCM] and splenius [SPL]). Muscle activity was compared between the uncompensated dystonic posture and during the maintenance of midposition. In addition, patients were separated into two groups (geste = 6; no geste = 6) based on whether they had a clinically efficacious geste to determine the effect of geste on patterns of cervical muscle activity. Muscle activity was measured during the maintenance of midposition with and without a clinical or simulated geste. Differences in muscle activity between the groups and postures were compared using repeated measure analysis of variance (ANOVA) analyses. The four muscles tested showed a significant difference in muscle activity in the uncompensated dystonic posture as a result of the increased activity in the agonist muscle pair (SCM and SPL responsible for the dystonic posture) (EMG amplitude: F[1,11] = 18.81, p = 0.0012; EMG frequency: F[1,11] = 32.07, p = 0.0001). Maintaining the head in the midposition was associated with a significant reduction in muscle activity compared with the uncompensated dystonic posture (EMG amplitude: F[1,9] = 6.36, p < 0.033; EMG frequency: F[1,9] = 10.96, p < 0.0091). This reduction in midposition muscle activity was significantly greater in the agonist muscle pair (EMG amplitude: F[1,10] = 19.70, p = 0.0013; EMG frequency: F[1,10] = 44.67, p < 0.0001). In the patients with clinically effective geste, there was no additional reduction in muscle activity observed in the midposition when they performed their geste (EMG amplitude: F[1,9] = 4.63, p = 0.060; EMG frequency: F[1,9] = 1.22, p = 0.298). These findings suggest that CD with rotation is characterized by predominantly increased agonist muscle activation. Patients with CD retain the ability to modulate this involuntary agonist muscle activity to maintain the head in the midposition. The maintenance of the midposition does not seem to be facilitated by geste.</div>
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<author><name sortKey="Goetz, C G" sort="Goetz, C G" uniqKey="Goetz C" first="C. G." last="Goetz">C. G. Goetz</name>
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<country>États-Unis</country>
<placeName><region type="state">Illinois</region>
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<series><title level="j" type="main">Movement disorders</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cervical spine</term>
<term>Dystonia</term>
<term>Electromyography</term>
<term>Exploration</term>
<term>Head</term>
<term>Human</term>
<term>Posture</term>
<term>Striated muscle</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Dystonie</term>
<term>Rachis cervical</term>
<term>Electromyographie</term>
<term>Posture</term>
<term>Tête</term>
<term>Muscle strié</term>
<term>Exploration</term>
<term>Homme</term>
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<author><name sortKey="Leurgans, Sue" sort="Leurgans, Sue" uniqKey="Leurgans S" first="Sue" last="Leurgans">Sue Leurgans</name>
</author>
<author><name sortKey="Stebbins, Glenn T" sort="Stebbins, Glenn T" uniqKey="Stebbins G" first="Glenn T." last="Stebbins">Glenn T. Stebbins</name>
</author>
<author><name sortKey="Goetz, Christopher G" sort="Goetz, Christopher G" uniqKey="Goetz C" first="Christopher G." last="Goetz">Christopher G. Goetz</name>
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<sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">The effect of changes in head posture on the patterns of muscle activity in cervical dystonia (CD)</title>
<author><name sortKey="Buchman, Aron S" sort="Buchman, Aron S" uniqKey="Buchman A" first="Aron S." last="Buchman">Aron S. Buchman</name>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurological Sciences, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Comella, Cynthia L" sort="Comella, Cynthia L" uniqKey="Comella C" first="Cynthia L." last="Comella">Cynthia L. Comella</name>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurological Sciences, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Leurgans, Sue" sort="Leurgans, Sue" uniqKey="Leurgans S" first="Sue" last="Leurgans">Sue Leurgans</name>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurological Sciences, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Preventative Medicine, Biostatistics, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Stebbins, Glenn T" sort="Stebbins, Glenn T" uniqKey="Stebbins G" first="Glenn T." last="Stebbins">Glenn T. Stebbins</name>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurological Sciences, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Goetz, Christopher G" sort="Goetz, Christopher G" uniqKey="Goetz C" first="Christopher G." last="Goetz">Christopher G. Goetz</name>
<affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurological Sciences, Rush‐Presbyterian‐St. Luke's Medical Center, Chicago, Illinois</wicri:regionArea>
<placeName><region type="state">Illinois</region>
</placeName>
</affiliation>
</author>
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<series><title level="j">Movement Disorders</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="1998-05">1998-05</date>
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<idno type="DOI">10.1002/mds.870130320</idno>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term>
<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Cervical dystonia</term>
<term>Dystonia</term>
<term>Dystonia (diagnosis)</term>
<term>Dystonia (physiopathology)</term>
<term>Electromyography</term>
<term>Female</term>
<term>Geste</term>
<term>Head Movements (physiology)</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Motor Neurons (physiology)</term>
<term>Neck Muscles (innervation)</term>
<term>Reference Values</term>
<term>Signal Processing, Computer-Assisted</term>
<term>Torticollis (diagnosis)</term>
<term>Torticollis (physiopathology)</term>
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<keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Dystonia</term>
<term>Torticollis</term>
</keywords>
<keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Neck Muscles</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Head Movements</term>
<term>Motor Neurons</term>
</keywords>
<keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Dystonia</term>
<term>Torticollis</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Adult</term>
<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Electromyography</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Reference Values</term>
<term>Signal Processing, Computer-Assisted</term>
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<front><div type="abstract" xml:lang="en">Twelve patients with cervical dystonia (CD) and predominant rotation were studied to determine the effects of changes in head posture on the specific patterns of cervical muscle activity. Turns analysis was used to quantify muscle activity underlying head rotation, recorded simultaneously from the agonist and antagonist muscle pairs bilaterally (sternocleidomastoid [SCM] and splenius [SPL]). Muscle activity was compared between the uncompensated dystonic posture and during the maintenance of midposition. In addition, patients were separated into two groups (geste = 6; no geste = 6) based on whether they had a clinically efficacious geste to determine the effect of geste on patterns of cervical muscle activity. Muscle activity was measured during the maintenance of midposition with and without a clinical or simulated geste. Differences in muscle activity between the groups and postures were compared using repeated measure analysis of variance (ANOVA) analyses. The four muscles tested showed a significant difference in muscle activity in the uncompensated dystonic posture as a result of the increased activity in the agonist muscle pair (SCM and SPL responsible for the dystonic posture) (EMG amplitude: F[1,11] = 18.81, p = 0.0012; EMG frequency: F[1,11] = 32.07, p = 0.0001). Maintaining the head in the midposition was associated with a significant reduction in muscle activity compared with the uncompensated dystonic posture (EMG amplitude: F[1,9] = 6.36, p < 0.033; EMG frequency: F[1,9] = 10.96, p < 0.0091). This reduction in midposition muscle activity was significantly greater in the agonist muscle pair (EMG amplitude: F[1,10] = 19.70, p = 0.0013; EMG frequency: F[1,10] = 44.67, p < 0.0001). In the patients with clinically effective geste, there was no additional reduction in muscle activity observed in the midposition when they performed their geste (EMG amplitude: F[1,9] = 4.63, p = 0.060; EMG frequency: F[1,9] = 1.22, p = 0.298). These findings suggest that CD with rotation is characterized by predominantly increased agonist muscle activation. Patients with CD retain the ability to modulate this involuntary agonist muscle activity to maintain the head in the midposition. The maintenance of the midposition does not seem to be facilitated by geste.</div>
</front>
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	Movement Disorders (revue)
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Movement Disorders (revue)

The effect of changes in head posture on the patterns of muscle activity in cervical dystonia (CD)

The effect of changes in head posture on the patterns of muscle activity in cervical dystonia (CD)

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