MovDisordV3, PascalFrancis, Corpus, bibRecord, 002134

Muscle relaxation is impaired in dystonia: A reaction time study

Identifieur interne : 002134 ( PascalFrancis/Corpus ); précédent : 002133; suivant : 002135

Muscle relaxation is impaired in dystonia: A reaction time study

Auteurs : Alessandro Buccolieri ; Laura Avanzino ; Lucio Marinelli ; Carlo Trompetto ; Roberta Marchese ; Giovanni Abbruzzese

Source :

Movement disorders [ 0885-3185 ] ; 2004.

RBID : Pascal:04-0415499

Descripteurs français

Pascal (Inist)
- Dystonie, Temps réaction, Système nerveux pathologie.

English descriptors

KwdEn :
- Dystonia, Nervous system diseases, Reaction time.

Abstract

A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08	`01`	`1`	`ENG`	`@1 Muscle relaxation is impaired in dystonia: A reaction time study`
A11	`01`	`1`		`@1 BUCCOLIERI (Alessandro)`
A11	`02`	`1`		`@1 AVANZINO (Laura)`
A11	`03`	`1`		`@1 MARINELLI (Lucio)`
A11	`04`	`1`		`@1 TROMPETTO (Carlo)`
A11	`05`	`1`		`@1 MARCHESE (Roberta)`
A11	`06`	`1`		`@1 ABBRUZZESE (Giovanni)`
A14	`01`			`@1 Department of Neurosciences, Ophthalmology and Genetics, Section of Neurology, Movement Disorder Unit, University of Genoa @2 Genoa @3 ITA @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut.`
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A21				`@1 2004`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 20953 @5 354000113781310110`
A44				`@0 0000 @1 © 2004 INIST-CNRS. All rights reserved.`
A45				`@0 30 ref.`
A47	`01`	`1`		`@0 04-0415499`
A60				`@1 P @3 CC`
A61				`@0 A`
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C01	`01`		`ENG`	@0 A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.
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C07	`01`	`X`	`SPA`	`@0 Extrapiramidal síndrome @5 37`
C07	`02`	`X`	`FRE`	`@0 Mouvement involontaire @5 38`
C07	`02`	`X`	`ENG`	`@0 Involuntary movement @5 38`
C07	`02`	`X`	`SPA`	`@0 Movimiento involuntario @5 38`
C07	`03`	`X`	`FRE`	`@0 Muscle strié pathologie @5 39`
C07	`03`	`X`	`ENG`	`@0 Striated muscle disease @5 39`
C07	`03`	`X`	`SPA`	`@0 Músculo estriado patología @5 39`
C07	`04`	`X`	`FRE`	`@0 Trouble neurologique @5 40`
C07	`04`	`X`	`ENG`	`@0 Neurological disorder @5 40`
C07	`04`	`X`	`SPA`	`@0 Trastorno neurológico @5 40`
C07	`05`	`X`	`FRE`	`@0 Encéphale pathologie @5 41`
C07	`05`	`X`	`ENG`	`@0 Cerebral disorder @5 41`
C07	`05`	`X`	`SPA`	`@0 Encéfalo patología @5 41`
C07	`06`	`X`	`FRE`	`@0 Système nerveux central pathologie @5 42`
C07	`06`	`X`	`ENG`	`@0 Central nervous system disease @5 42`
C07	`06`	`X`	`SPA`	`@0 Sistema nervosio central patología @5 42`
N21				`@1 236`
N44	`01`			`@1 OTO`
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Format Inist (serveur)

NO :	PASCAL 04-0415499 INIST
ET :	Muscle relaxation is impaired in dystonia: A reaction time study
AU :	BUCCOLIERI (Alessandro); AVANZINO (Laura); MARINELLI (Lucio); TROMPETTO (Carlo); MARCHESE (Roberta); ABBRUZZESE (Giovanni)
AF :	Department of Neurosciences, Ophthalmology and Genetics, Section of Neurology, Movement Disorder Unit, University of Genoa/Genoa/Italie (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut.)
DT :	Publication en série; Courte communication, note brève; Niveau analytique
SO :	Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2004; Vol. 19; No. 6; Pp. 681-687; Bibl. 30 ref.
LA :	Anglais
EA :	A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.
CC :	002B17
FD :	Dystonie; Temps réaction; Système nerveux pathologie
FG :	Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Encéphale pathologie; Système nerveux central pathologie
ED :	Dystonia; Reaction time; Nervous system diseases
EG :	Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Cerebral disorder; Central nervous system disease
SD :	Distonía; Tiempo reacción; Sistema nervioso patología
LO :	INIST-20953.354000113781310110
ID :	04-0415499

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Pascal:04-0415499

Le document en format XML

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<front><div type="abstract" xml:lang="en">A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.</div>
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<fC01 i1="01" l="ENG"><s0>A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.</s0>
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<fC03 i1="03" i2="X" l="ENG"><s0>Nervous system diseases</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Sistema nervioso patología</s0>
<s5>04</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Extrapyramidal syndrome</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Extrapyramidal syndrome</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Extrapiramidal síndrome</s0>
<s5>37</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Mouvement involontaire</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Involuntary movement</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Movimiento involuntario</s0>
<s5>38</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Muscle strié pathologie</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Striated muscle disease</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Músculo estriado patología</s0>
<s5>39</s5>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Trouble neurologique</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Neurological disorder</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Trastorno neurológico</s0>
<s5>40</s5>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Encéphale pathologie</s0>
<s5>41</s5>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Cerebral disorder</s0>
<s5>41</s5>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Encéfalo patología</s0>
<s5>41</s5>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Système nerveux central pathologie</s0>
<s5>42</s5>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Central nervous system disease</s0>
<s5>42</s5>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Sistema nervosio central patología</s0>
<s5>42</s5>
</fC07>
<fN21><s1>236</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 04-0415499 INIST</NO>
<ET>Muscle relaxation is impaired in dystonia: A reaction time study</ET>
<AU>BUCCOLIERI (Alessandro); AVANZINO (Laura); MARINELLI (Lucio); TROMPETTO (Carlo); MARCHESE (Roberta); ABBRUZZESE (Giovanni)</AU>
<AF>Department of Neurosciences, Ophthalmology and Genetics, Section of Neurology, Movement Disorder Unit, University of Genoa/Genoa/Italie (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut.)</AF>
<DT>Publication en série; Courte communication, note brève; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2004; Vol. 19; No. 6; Pp. 681-687; Bibl. 30 ref.</SO>
<LA>Anglais</LA>
<EA>A simple visual reaction time (RT) paradigm was used to investigate whether the velocity of relaxation is impaired in dystonia. In 16 subjects with a clinical diagnosis of adult-onset focal, segmental or multifocal dystonia and in 15 age-matched normal controls, the relaxation reaction time (R-RT) and the contraction reaction time (C-RT) were compared across different tasks involving the flexor carpi radialis (FCR), biceps brachii (BB) and triceps brachii (TR) arm muscles. In normal controls, the latency of EMG termination (R-RT) was significantly shorter than the latency of electromyographic (EMG) onset (C-RT) in the BB and TR muscles, but not in the FCR muscle. In dystonic patients, the latency of EMG termination (R-RT) was significantly longer than the latency of EMG onset (C-RT) in the FCR and BB muscles. No significant difference of the C-RT was observed between patients and controls whereas the R-RT was prolonged significantly in the BB and TR muscles of patients with dystonia and almost significantly in the FCR muscle. This study indicates that muscle relaxation is abnormal in patients with focal (multifocal or segmental) dystonia. The impaired muscle relaxation may contribute to the longer overlap of agonist-antagonist activities (co-contraction) typically observed in dystonia and to the slowness of voluntary movement sequencing.</EA>
<CC>002B17</CC>
<FD>Dystonie; Temps réaction; Système nerveux pathologie</FD>
<FG>Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Encéphale pathologie; Système nerveux central pathologie</FG>
<ED>Dystonia; Reaction time; Nervous system diseases</ED>
<EG>Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Cerebral disorder; Central nervous system disease</EG>
<SD>Distonía; Tiempo reacción; Sistema nervioso patología</SD>
<LO>INIST-20953.354000113781310110</LO>
<ID>04-0415499</ID>
</server>
</inist>
</record>

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	Movement Disorders (revue)
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Movement Disorders (revue)

Muscle relaxation is impaired in dystonia: A reaction time study

Muscle relaxation is impaired in dystonia: A reaction time study

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