Neuromuscular fatigue during a prolonged intermittent exercise: Application to tennis.

Détails

ID Serval
serval:BIB_8B874C7B64F6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Neuromuscular fatigue during a prolonged intermittent exercise: Application to tennis.
Périodique
Journal of Electromyography and Kinesiology
Auteur(s)
Girard O., Lattier G., Maffiuletti N.A., Micallef J.P., Millet G.P.
ISSN
1050-6411 (Print)
ISSN-L
1050-6411
Statut éditorial
Publié
Date de publication
07/2008
Peer-reviewed
Oui
Volume
18
Numéro
6
Pages
1038-1046
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
The time course of alteration in neuromuscular function of the knee extensor muscles was characterized during a prolonged intermittent exercise. Maximal voluntary contraction (MVC) and surface EMG activity of both vastii were measured during brief interruptions before (T(0)), during (30, 60, 90, 120, 150 and 180min: T(30), T(60), T(90), T(120), T(150), T(180)) and 30min after (T(+30)) a 3h tennis match in 12 trained players. M-wave and twitch contractile properties were analyzed following single stimuli. Short tetani at 20Hz and 80Hz were also applied to six subjects at T(0) and T(180). Significant reductions in MVC (P<0.05; -9%) and electromyographic activity normalized to the M wave for both vastii (P<0.01) occurred with fatigue at T(180). No significant changes in M-wave duration and amplitude nor in twitch contractile properties were observed. The ratio between the torques evoked by 20Hz and 80Hz stimulation declined significantly (P<0.001; -12%) after exercise. Central activation failure and alterations in excitation-contraction coupling are probable mechanisms contributing to the moderate impairment of the neuromuscular function during prolonged tennis playing.
Mots-clé
Electromyography, Humans, Knee/physiology, Male, Muscle Contraction/physiology, Muscle Fatigue/physiology, Muscle, Skeletal/physiology, Tennis/physiology, Young Adult
Pubmed
Web of science
Création de la notice
25/09/2008 9:01
Dernière modification de la notice
03/03/2018 19:11
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