Movement Disorders (revue)

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Antiparkinson medications improve agonist activation but not antagonist inhibition during sequential reaching movements

Identifieur interne : 001E66 ( PascalFrancis/Corpus ); précédent : 001E65; suivant : 001E67

Antiparkinson medications improve agonist activation but not antagonist inhibition during sequential reaching movements

Auteurs : Valerie E. Kelly ; Amy J. Bastian

Source :

RBID : Pascal:05-0362495

Descripteurs français

English descriptors

Abstract

The execution of sequential arm movements is critical to activities of daily living such as eating and grooming. It is known that movement sequences are bradykinetic in people with Parkinson's disease (PD) and that antiparkinson medications improve the speed of movement sequences. However, it is unclear how muscle activity is modulated during sequential movements and what effect antiparkinson medications have on muscle modulation. We studied subjects with PD and age- and gender-matched control subjects making sequential reaching movements. Subjects with PD were tested before and after their morning dose of antiparkinson medications (levodopa and/or dopamine agonists). We examined the effect of antiparkinson medications on the modulation ol muscle activity (i.e., the ability to activate and inhibit each muscle throughout the course of a sequence). Results showed that the group with PD, before medication, moved more slowly and modulated muscle activity poorly compared to the control group. Antiparkinson medications improved movement speed as expected, although sequential movements remained slower than normal even after medication. Medication improved the ability to activate agonist muscle activity but did not improve the ability to inhibit antagonist activity. Instead, antagonist activity was also increased, resulting in minimal improvements in muscle modulation during sequential reaching movements.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A03   1    @0 Mov. disord.
A05       @2 20
A06       @2 6
A08 01  1  ENG  @1 Antiparkinson medications improve agonist activation but not antagonist inhibition during sequential reaching movements
A11 01  1    @1 KELLY (Valerie E.)
A11 02  1    @1 BASTIAN (Amy J.)
A14 01      @1 Department of Rehabilitation Medicine, University of Washington @2 Seattle, Washington @3 USA @Z 1 aut.
A14 02      @1 Kennedy Krieger Institute and Department of Neurology, Johns Hopkins University @2 Baltimore, Maryland @3 USA @Z 2 aut.
A20       @1 694-704
A21       @1 2005
A23 01      @0 ENG
A43 01      @1 INIST @2 20953 @5 354000138604660060
A44       @0 0000 @1 © 2005 INIST-CNRS. All rights reserved.
A45       @0 25 ref.
A47 01  1    @0 05-0362495
A60       @1 P
A61       @0 A
A64 01  1    @0 Movement disorders
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C01 01    ENG  @0 The execution of sequential arm movements is critical to activities of daily living such as eating and grooming. It is known that movement sequences are bradykinetic in people with Parkinson's disease (PD) and that antiparkinson medications improve the speed of movement sequences. However, it is unclear how muscle activity is modulated during sequential movements and what effect antiparkinson medications have on muscle modulation. We studied subjects with PD and age- and gender-matched control subjects making sequential reaching movements. Subjects with PD were tested before and after their morning dose of antiparkinson medications (levodopa and/or dopamine agonists). We examined the effect of antiparkinson medications on the modulation ol muscle activity (i.e., the ability to activate and inhibit each muscle throughout the course of a sequence). Results showed that the group with PD, before medication, moved more slowly and modulated muscle activity poorly compared to the control group. Antiparkinson medications improved movement speed as expected, although sequential movements remained slower than normal even after medication. Medication improved the ability to activate agonist muscle activity but did not improve the ability to inhibit antagonist activity. Instead, antagonist activity was also increased, resulting in minimal improvements in muscle modulation during sequential reaching movements.
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C03 02  X  ENG  @0 Parkinson disease @5 02
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C07 05  X  SPA  @0 Electrofisiología @5 41
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N44 01      @1 OTO
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Format Inist (serveur)

NO : PASCAL 05-0362495 INIST
ET : Antiparkinson medications improve agonist activation but not antagonist inhibition during sequential reaching movements
AU : KELLY (Valerie E.); BASTIAN (Amy J.)
AF : Department of Rehabilitation Medicine, University of Washington/Seattle, Washington/Etats-Unis (1 aut.); Kennedy Krieger Institute and Department of Neurology, Johns Hopkins University/Baltimore, Maryland/Etats-Unis (2 aut.)
DT : Publication en série; Niveau analytique
SO : Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2005; Vol. 20; No. 6; Pp. 694-704; Bibl. 25 ref.
LA : Anglais
EA : The execution of sequential arm movements is critical to activities of daily living such as eating and grooming. It is known that movement sequences are bradykinetic in people with Parkinson's disease (PD) and that antiparkinson medications improve the speed of movement sequences. However, it is unclear how muscle activity is modulated during sequential movements and what effect antiparkinson medications have on muscle modulation. We studied subjects with PD and age- and gender-matched control subjects making sequential reaching movements. Subjects with PD were tested before and after their morning dose of antiparkinson medications (levodopa and/or dopamine agonists). We examined the effect of antiparkinson medications on the modulation ol muscle activity (i.e., the ability to activate and inhibit each muscle throughout the course of a sequence). Results showed that the group with PD, before medication, moved more slowly and modulated muscle activity poorly compared to the control group. Antiparkinson medications improved movement speed as expected, although sequential movements remained slower than normal even after medication. Medication improved the ability to activate agonist muscle activity but did not improve the ability to inhibit antagonist activity. Instead, antagonist activity was also increased, resulting in minimal improvements in muscle modulation during sequential reaching movements.
CC : 002B17; 002B02B10; 002B02B06
FD : Système nerveux pathologie; Parkinson maladie; Chimiothérapie; Electromyographie
FG : Encéphale pathologie; Extrapyramidal syndrome; Maladie dégénérative; Système nerveux central pathologie; Electrophysiologie
ED : Nervous system diseases; Parkinson disease; Chemotherapy; Electromyography
EG : Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease; Electrophysiology
SD : Sistema nervioso patología; Parkinson enfermedad; Quimioterapia; Electromiografía
LO : INIST-20953.354000138604660060
ID : 05-0362495

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Pascal:05-0362495

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