MovDisordV3, Main, Exploration, bibRecord, 004A42

Kinetic tremor in a reach‐to‐grasp movement in Parkinson's disease

Identifieur interne : 004A42 ( Main/Exploration ); précédent : 004A41; suivant : 004A43

Kinetic tremor in a reach‐to‐grasp movement in Parkinson's disease

Auteurs : R. Wenzelburger [Allemagne] ; J. Raethjen [Allemagne] ; K. Löffler [Allemagne] ; H. Stolze [Allemagne] ; M. Illert [Allemagne] ; G. Deuschl [Allemagne]

Source :

Movement Disorders [ 0885-3185 ] ; 2000-11.

RBID : ISTEX:62EFBC9CCE80829CECA51FECEA5BE03817C7C2FE

Descripteurs français

Pascal (Inist)
- Accélérométrie, Adulte, Cinétique, Electromyographie, Exploration, Main, Membre supérieur, Mouvement corporel, Parkinson maladie, Tremblement.
Wicri :
- topic : Adulte.

English descriptors

KwdEn :
- Accelerometry, Adult, Aged, Aged, 80 and over, Biomechanical Phenomena, Body movement, Electromyography, Exploration, Female, Hand, Hand Strength, Humans, Kinetic tremor, Kinetics, Male, Middle Aged, Movement, Movement analysis, Neural Inhibition, Parkinson Disease (physiopathology), Parkinson disease, Parkinson's disease, Severity of Illness Index, Tremor, Tremor (physiopathology), Tremor analysis, Upper limb.
MESH :
- physiopathology : Parkinson Disease, Tremor.
- Adult, Aged, Aged, 80 and over, Biomechanical Phenomena, Female, Hand Strength, Humans, Male, Middle Aged, Movement, Neural Inhibition, Severity of Illness Index.

Abstract

The aim of this study was to quantify the tremor of the hand during a natural movement (kinetic tremor) in tremor‐dominant parkinsonian patients (n = 13). We used a three‐dimensional camera system to kinematically analyze rest and kinetic tremors in an unrestrained reach‐to‐grasp movement, and additional tremor recordings were performed under standard postural and rest conditions using electromyography and accelerometry. The standard analysis showed a highly synchronized tremor with similar frequencies at rest and in sustained postural tasks, with and without loading. A kinematic recording was used to compare rest and action conditions. A strong inhibition of the resting tremor was present at the onset of the movement and reached its peak during deceleration. A kinetic tremor of low amplitude was present in most of the parkinsonian patients, but its occurrence was confined mainly to the terminal periods of the movement. The frequency of kinetic tremor was significantly higher than that at rest, before the onset of the movement in Parkinson's disease, as determined by the kinematic analysis (mean, 5.5 Hz vs 6.5 Hz; p <0.01). Our results confirm similarities between the tremor at rest and the oscillations during a sustained postural task in classic parkinsonian tremor. In contrast to this stable tremor, which seems to be generated by basal ganglia oscillators, a different pathophysiology of oscillations during motion must be considered. The kinetic tremor is most likely related to an enhancement of the physiologic tremor in the terminal phase of the reach‐to‐grasp movement.

Url:

https://api.istex.fr/document/62EFBC9CCE80829CECA51FECEA5BE03817C7C2FE/fulltext/pdf

DOI: 10.1002/1531-8257(200011)15:6<1084::AID-MDS1005>3.0.CO;2-Y

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">The aim of this study was to quantify the tremor of the hand during a natural movement (kinetic tremor) in tremor‐dominant parkinsonian patients (n = 13). We used a three‐dimensional camera system to kinematically analyze rest and kinetic tremors in an unrestrained reach‐to‐grasp movement, and additional tremor recordings were performed under standard postural and rest conditions using electromyography and accelerometry. The standard analysis showed a highly synchronized tremor with similar frequencies at rest and in sustained postural tasks, with and without loading. A kinematic recording was used to compare rest and action conditions. A strong inhibition of the resting tremor was present at the onset of the movement and reached its peak during deceleration. A kinetic tremor of low amplitude was present in most of the parkinsonian patients, but its occurrence was confined mainly to the terminal periods of the movement. The frequency of kinetic tremor was significantly higher than that at rest, before the onset of the movement in Parkinson's disease, as determined by the kinematic analysis (mean, 5.5 Hz vs 6.5 Hz; p <0.01). Our results confirm similarities between the tremor at rest and the oscillations during a sustained postural task in classic parkinsonian tremor. In contrast to this stable tremor, which seems to be generated by basal ganglia oscillators, a different pathophysiology of oscillations during motion must be considered. The kinetic tremor is most likely related to an enhancement of the physiologic tremor in the terminal phase of the reach‐to‐grasp movement.</div>
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Movement Disorders (revue)

Kinetic tremor in a reach‐to‐grasp movement in Parkinson's disease

Kinetic tremor in a reach‐to‐grasp movement in Parkinson's disease

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Movement Disorders (revue)
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