The effect of simulated match-induced fatigue on strength, proprioception and functional performance in volleyball players

Poster Presentation
Paper ID : 1512-SSRC
Authors
1گروه آسیب شناسی و حرکات اصلاحی.دانشکده علوم ورزشی.دانشگاه اصفهان.اصفهان.ایران
2استادیار آسیب شناسی ورزشی و حرکات اصلاحی، دانشکده علوم ورزشی، دانشگاه اصفهان
3Department of Sport Biomechanics, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran
Abstract
Volleyball is one of the most damaging sports that is held as a group and competition at different levels. In volleyball players, the injuries inflicted on the lower limbs are more frequent in the knee and ankle area. Due to its time-consuming nature, volleyball puts athletes at risk of more injuries occurring in volleyball players in the future. When dynamic neuromuscular control changes in activities such as cutting movements, jumping and repeated landings, etc., the risk of lower limb injuries increases. The present study was conducted with the aim of investigating the effect of simulated volleyball game fatigue on strength, proprioception and motor performance of volleyball players. The statistical population of the current study consists of 15 teenage boys and young volleyball players. The pre-examination stages were carried out in the order of performing a motor-functional screening test, ankle and knee proprioceptive evaluation with motion capture system and quadriceps and hamstring strength evaluation with force plate. After this stage, the subjects performed the fatigue protocol and after reaching the fatigue limit, they performed the post-test.
Paired T and Wilcoxon tests were used to compare the two stages before and after the fatigue protocol. The results showed that the fatigue protocol of the volleyball simulator had a significant effect on the sense of proprioception in the knee joint (P = 0.026) and the impulse of the muscle group of the quadriceps in the isometric mode decreased by more than 10% (P = 0.026). Also, the explosive power or maximum force of the hamstring group (P = 0.039), the impulse of the hamstring muscle group (P = 0.007), the FMS index (P = 0.000), the movement control index of athletes (P = 0.001) and the pattern index Functional (P = 001/) showed this This means that fatigue causes a drop in the mentioned items. Based on this, performing functional, neuromuscular and balance exercises in addition to endurance exercises can delay the time of fatigue and reduce the possibility of injury.
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