Evolution of electromyography activity during all-out cycling test at 100% maximal aerobic power exercise (E?volution de l'activite? e?lectromyographique au cours d'un test de pe?dalage de temps limite a? 100% de puissance maximale ae?robie)

摘要

Introduction. - The aim of this study was to analyse the evolution of neuromuscular fatigue in vastus lateralis and gastrocnemius medialis muscles during all-out cycling test at 100% maximal aerobic power. Fact synthesis. - Mean EMG increased from the beginning of the test and then decreased after have attained its maximum for all subjects and for both muscles, whereas the EMG burst duration remained constant. Conclusion. - The decrease of muscular activity towards the end of the test, whereas the intensity remains constant, seems to indicate synergist muscles activation, i.e. a mechanism of adaptation underlying the fatigue process. 2006 Elsevier SAS. Tous droits reserves.