Introduction: Depending on the type of exercise, intensity and duration can have different types and cause fatigue in person. The fatigue limit of physical performance is very high. It seems fatigue and proprioceptive information contractile component performance changes and its effect on postural control and balance.
Methodology: In this quasi-experimental study, 30 healthy male volunteers participated in the study. In two independent groups (n=15) were randomly chosen. Balance before and after the fatigue protocol, open chain (Leg extension) and closed chain (squat machine) is considered, measured. The balance error scoring system (BESS), the star excursion balance test (SEBT), are used to measure static and dynamic balance. To measure perceived exertion to measure fatigue in subjects of fatigue Borg scale was used. Statistical analysis was performed using paired t-test and independent t-test.
Results: Results indicated that lower muscle fatigue caused by open and closed chain fatigue Protocol on static and dynamic balance in boys 18-20 years is impressive (p≤0.05) and it has a negative effect on balance.
Discussion: Both anaerobic and Super Maximal Intermittent Exercise in the kinetic chain (open and closed) that begins with a high intensity, Likely to lead to a hyperventilation, acidosis, somatosensory and vestibular system disorders, lower extremity muscle fatigue and impaired local muscle contraction mechanism. Mentioned factors may impair the postural control system environment and lead to a reduction in the balance or in other words fatigue caused by changes and disturbances in pressure, and this increased displacement of the center of pressure is enough to disrupt that balance. Since both kinetic chain (open and closed) leading to localized muscle fatigue resulting negative impact on the balance (static and dynamic) as one of the essential factors that play an important role in athletic performance and has a high level performances, so notice is necessary to prevent any possible damage and reduced physical performance for athletes avoided and athletes can play their best performance in training and competition.