Introduction: High-intensity resistance exercise causes muscle damage and this can lead to reduced performance. It is reported that BCAA supplementation before resistance exercise can reduce perceived exertion and a lower increase in serum Myoglobin. The aim of this study was to investigate the effect of branched-chain amino acids on indicators of recovery after three sessions of high-intensity resistance exercise, muscle strength was active in young men.
Methodology: For this purpose, 20 student’s active participants with mean age 22.3 ± 2.31, height 176.6 ± 4.43 were assigned randomly into two groups control and supplements. The maximum dynamic power measurement and after a week training protocol consisted of three sessions of resistance exercise was carried out in three consecutive days. The training program consists of eight movements with 80% of one repetition maximum (three sets of 8-6 reps), respectively. Immediately after the completion of each training session of 5000 mg of BCAA supplementation was given just five tablet to supplement and placebo for the control group was used. Before and after 48 hours the last training session, blood samples and maximum dynamic power were examined. To compare the results between a group of T-dependent and independent T-test group at a significance level p≤0.05 was performed using SPSS version 22.
Results: The maximum dynamic power reduction in both groups supplement (p=0.013) and the controls (p=0.001) was significant. Serum myoglobin in the supplement group also increased but not significant (p=0.055), but in the control group showed a significant increase (p=0.027). The groups showed no significant differences between groups in maximum power dynamic between the two groups, but there is a significant difference between the two groups in myoglobin variable.
Discussion and Conclusion: According these findings BCAA supplementation after high intensity resistance training can prevent a large increase in serum myoglobin index, but no tangible effect on muscle strength. Howatson and colleagues (2012) reported that BCAA consumption despite the decline in muscle pain, unable to muscle function decline following intense resistance training and muscle damage resulting prevent. Also, Shimomura and colleagues (2010) increase in serum myoglobin concentration less reported after resistance exercise). The results of these studies were consistent with the study.