Movement Disorders (revue)

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Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease

Identifieur interne : 000E20 ( PascalFrancis/Corpus ); précédent : 000E19; suivant : 000E21

Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease

Auteurs : Natalie E. Allen ; Colleen G. Canning ; Catherine Sherrington ; Victor S. C. Fung

Source :

RBID : Pascal:09-0349984

Descripteurs français

English descriptors

Abstract

Muscle power (force velocity) could clarify the relationship between weakness and bradykinesia in Parkinson's disease (PD). The aims of this study were to determine if patients with PD were weaker and/or less powerful in their leg extensor muscles than a neurologically normal control group and to determine the relative contributions of force and movement velocity/bradykinesia to muscle power in PD. Forty patients with PD and 40 controls were assessed. Strength in Newtons (N) was measured as the heaviest load the participant could lift. Power in Watts (W) was measured by having the participant perform lifts as fast as possible. The PD group were 172 N weaker (95% CI 28-315) and 124 W less powerful at peak power (95% CI 32-216) than controls. However, velocity at maximal power was only reduced compared with controls when lifting light to medium loads. When lifting heavy loads bradykinesia was no longer apparent in the PD group. These results suggest that reduced muscle power in PD at lighter loads arises from weakness and bradykinesia combined, but at heavier loads arises only from weakness. The absence of bradykinesia in the PD group when lifting heavy loads warrants further investigation.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08 01  1  ENG  @1 Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease
A11 01  1    @1 ALLEN (Natalie E.)
A11 02  1    @1 CANNING (Colleen G.)
A11 03  1    @1 SHERRINGTON (Catherine)
A11 04  1    @1 FUNG (Victor S. C.)
A14 01      @1 Neurological Rehabilitation Research Group, Faculty of Health Sciences, The University of Sydney @2 Sydney @3 AUS @Z 1 aut. @Z 2 aut.
A14 02      @1 The George Institute for International Health, The University of Sydney @2 Sydney @3 AUS @Z 3 aut.
A14 03      @1 Movement Disorder Unit, Department of Neurology, Westmead Hospital @2 Sydney @3 AUS @Z 4 aut.
A20       @1 1344-1351
A21       @1 2009
A23 01      @0 ENG
A43 01      @1 INIST @2 20953 @5 354000170902500130
A44       @0 0000 @1 © 2009 INIST-CNRS. All rights reserved.
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A47 01  1    @0 09-0349984
A60       @1 P
A61       @0 A
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C01 01    ENG  @0 Muscle power (force velocity) could clarify the relationship between weakness and bradykinesia in Parkinson's disease (PD). The aims of this study were to determine if patients with PD were weaker and/or less powerful in their leg extensor muscles than a neurologically normal control group and to determine the relative contributions of force and movement velocity/bradykinesia to muscle power in PD. Forty patients with PD and 40 controls were assessed. Strength in Newtons (N) was measured as the heaviest load the participant could lift. Power in Watts (W) was measured by having the participant perform lifts as fast as possible. The PD group were 172 N weaker (95% CI 28-315) and 124 W less powerful at peak power (95% CI 32-216) than controls. However, velocity at maximal power was only reduced compared with controls when lifting light to medium loads. When lifting heavy loads bradykinesia was no longer apparent in the PD group. These results suggest that reduced muscle power in PD at lighter loads arises from weakness and bradykinesia combined, but at heavier loads arises only from weakness. The absence of bradykinesia in the PD group when lifting heavy loads warrants further investigation.
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C03 02  X  FRE  @0 Pathologie du système nerveux @5 02
C03 02  X  ENG  @0 Nervous system diseases @5 02
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C07 01  X  ENG  @0 Cerebral disorder @5 37
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C07 02  X  FRE  @0 Syndrome extrapyramidal @5 38
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C07 03  X  FRE  @0 Maladie dégénérative @5 39
C07 03  X  ENG  @0 Degenerative disease @5 39
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N44 01      @1 OTO
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Format Inist (serveur)

NO : PASCAL 09-0349984 INIST
ET : Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease
AU : ALLEN (Natalie E.); CANNING (Colleen G.); SHERRINGTON (Catherine); FUNG (Victor S. C.)
AF : Neurological Rehabilitation Research Group, Faculty of Health Sciences, The University of Sydney/Sydney/Australie (1 aut., 2 aut.); The George Institute for International Health, The University of Sydney/Sydney/Australie (3 aut.); Movement Disorder Unit, Department of Neurology, Westmead Hospital/Sydney/Australie (4 aut.)
DT : Publication en série; Niveau analytique
SO : Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2009; Vol. 24; No. 9; Pp. 1344-1351; Bibl. 32 ref.
LA : Anglais
EA : Muscle power (force velocity) could clarify the relationship between weakness and bradykinesia in Parkinson's disease (PD). The aims of this study were to determine if patients with PD were weaker and/or less powerful in their leg extensor muscles than a neurologically normal control group and to determine the relative contributions of force and movement velocity/bradykinesia to muscle power in PD. Forty patients with PD and 40 controls were assessed. Strength in Newtons (N) was measured as the heaviest load the participant could lift. Power in Watts (W) was measured by having the participant perform lifts as fast as possible. The PD group were 172 N weaker (95% CI 28-315) and 124 W less powerful at peak power (95% CI 32-216) than controls. However, velocity at maximal power was only reduced compared with controls when lifting light to medium loads. When lifting heavy loads bradykinesia was no longer apparent in the PD group. These results suggest that reduced muscle power in PD at lighter loads arises from weakness and bradykinesia combined, but at heavier loads arises only from weakness. The absence of bradykinesia in the PD group when lifting heavy loads warrants further investigation.
CC : 002B17; 002B17G
FD : Maladie de Parkinson; Pathologie du système nerveux
FG : Pathologie de l'encéphale; Syndrome extrapyramidal; Maladie dégénérative; Pathologie du système nerveux central
ED : Parkinson disease; Nervous system diseases
EG : Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease
SD : Parkinson enfermedad; Sistema nervioso patología
LO : INIST-20953.354000170902500130
ID : 09-0349984

Links to Exploration step

Pascal:09-0349984

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