 Muscle fatigue is a process widely disbelieved and studied in the literature. Isometric handgrip exercises have been widely utilized to explain the effects of fatigue on the strength and activation of the muscles involved in certain exercises. Among the many factors that can influence the process of muscular fatigue, blood flow available at the time of exercise is an aspect of fundamental importance, as some studies demonstrate changes in the pattern of muscle recruitment and strength recovery when the exercise is performed associated with an external obstruction of blood flow. 