MovDisordV3, PascalFrancis, Checkpoint, bibRecord, 000E97

Effect of Movement Frequency on Repetitive Finger Movements in Patients with Parkinson's Disease

Identifieur interne : 000E97 ( PascalFrancis/Checkpoint ); précédent : 000E96; suivant : 000E98

Effect of Movement Frequency on Repetitive Finger Movements in Patients with Parkinson's Disease

Auteurs : Elizabeth L. Stegemöller [États-Unis] ; Tanya Simuni [États-Unis] ; Colum Mackinnon [États-Unis]

Source :

Movement disorders [ 0885-3185 ] ; 2009.

RBID : Pascal:09-0301995

Descripteurs français

Pascal (Inist)
- Maladie de Parkinson, Pathologie du système nerveux, Doigt, Homme, Chimiothérapie.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Chemotherapy, Finger, Human, Nervous system diseases, Parkinson disease.

Abstract

Performance of repetitive hand movements in patients with Parkinson's disease (PD) is characterized by slowness, reduced movement amplitude, and hesitation or arrests in ongoing movement. Currently, the factors and mechanisms contributing to impaired performance of these types of movement remain poorly understood. This study examined the effects of movement frequency and medication on the performance of unconstrained index finger flexion movements in patients with PD and matched control subjects. Movements were synchronized with an auditory tone as the frequency of the tone was increased from 1 to 3 Hz in 0.25 Hz increments. Movement performance was quantified based upon finger kinematics and electromyography (EMG) recorded from the index finger flexors and extensors. The principal finding was that patients with PD showed a dramatic reduction in movement amplitude, an increase in movement frequency, and a loss of phase when the movement frequency reached or exceeded 2 Hz. This deficit was not significantly improved with medications. In contrast, all control subjects could synchronize to 3 Hz. These findings show that movement frequency is a major determinant of hypokinesia during repetitive movements and may contribute to hesitations and movement arrest during clinical testing of bradykinesia in the upper limb of patients with PD.

Affiliations:

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Le document en format XML

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	Movement Disorders (revue)
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Movement Disorders (revue)

Effect of Movement Frequency on Repetitive Finger Movements in Patients with Parkinson's Disease

Effect of Movement Frequency on Repetitive Finger Movements in Patients with Parkinson's Disease

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri