Therefore, the first aim of this study was to evaluate fatigue time course during an isokinetic exercise composed of six sets of ten maximal concentric contractions separated by three minutes of passive recovery.
Comparable decreases in MVC, Pd and activation level have previously been found after a similar isokinetic exercise (Zory et al.
2003) Maximal voluntary eccentric, isometric and concentric torque recovery following a concentric isokinetic exercise.
Thus it is possible that the time course of recovery be different for lower limb muscles submitted to injury inducing models that use maximal eccentric isokinetic exercise with a low angular speed, firstly because of the function of these muscles in supporting body weight and secondly, because it appears that the pattern of recruiting motor units depends on the speed of movement (Ewing et al.
Thus the objectives of this study were: 1) propose a muscle injury inducing model using maximal eccentric isokinetic exercise with low angular speed; 2) assess the time course of recovery of the quadriceps femoris muscle injured by eccentric exercise with low angular speed, with special attention to functional recovery.
The study was designed to assess the time course of functional recovery of the injured quadriceps femoris muscle in a group of healthy, sedentary subjects submitted to a protocol of muscle injury induction by maximal eccentric isokinetic exercise with low angular speed.