Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease
Identifieur interne : 000E20 ( PascalFrancis/Corpus ); précédent : 000E19; suivant : 000E21Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease
Auteurs : Natalie E. Allen ; Colleen G. Canning ; Catherine Sherrington ; Victor S. C. FungSource :
- Movement disorders [ 0885-3185 ] ; 2009.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
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.
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Format Inist (serveur)
NO : | PASCAL 09-0349984 INIST |
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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 |
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Pascal:09-0349984Le document en format XML
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<front><div type="abstract" xml:lang="en">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.</div>
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<ET>Bradykinesia, Muscle Weakness and Reduced Muscle Power in Parkinson's Disease</ET>
<AU>ALLEN (Natalie E.); CANNING (Colleen G.); SHERRINGTON (Catherine); FUNG (Victor S. C.)</AU>
<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.)</AF>
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