The Effects of Fatigue Muscles of the Shoulder Girdle on Ground Reaction Force, Elbow and Shoulder Joint Angle, and Accuracy Athletic Performance in Penalty Handball

Fatigue is an integral part of sports that can affect athletic performance. The aim of this study was to determine the effect of shoulder girdle muscle fatigue on ground reaction force, Elbow and shoulder angle, and accuracy in the penalty for handball throwing.
Handball Player 10 healthy male subjects with no history of injury in the shoulder (mean age 9/18 years, weight 79/72 kg, height 179 cm, 6/5 year membership in the team) voluntarily participated in this study. Subjects, a total of 16 times before and 16 times after fatigue, with full respect for the law, the goals set at the gate penalty shot run. Ground reaction force, Angle of elbow and shoulder, and accuracy launch of the two-phase (phase of preparation for throwing and phase of the release of the ball) were recorded before and after fatigue.
Results showed ground reaction force and accuracy significant difference before and after fatigue, but showed no significant effect of fatigue on elbow flexion and shoulder flexion and abduction.
Due to the elite subjects muscle fatigue is generally not have a significant effect on postural control, angles and angular velocity, however, the reaction force and accuracy showed significant difference before and after fatigue, and ultimately affect the performance of athletes and competition results.