Avaliação do índice de fadiga muscular de flexores e extensores de joelho em indivíduos ativos e sedentários

Raynara Fonsêca dos Santos William Monteiro de Freitas Júnior Rogério Olmedija de Araújo About the authors



To evaluate the muscular fatigue of flexors and knee extensors in active and sedentary individuals.


The International Physical Activity Questionnaire (IPAQ), Physical Activity Alert Questionnaire (PAR-Q) and functional clinical examination were performed in order to guarantee safety during Isokinetic Dynamometry, performed in 3 sets of 5 repetitions of the knee flexion and extension movements, at speeds 120º/s, 180º/s and 240º/s.


Sedentary individuals had a higher fatigue index, being this difference significant in the left hamstrings.


It is important to determine the fatigue index, since the fatigue of the muscles directly interferes with the muscular performance and the appearance of injuries.

Knee; Fatigue; Quadriceps muscle; Hamstring muscles

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