Study on Changing Pattern of Immune and Endocrine Function of Athletes during Heavy Load Weight Training

The purpose of this study was to investigate the effects of heavy load weight training on immune and endocrine function of lifters.Twenty-five male junior lifers were recruited to undertake a 5-week weight-lifting training program which involved in double 2-week training of heavy load with a interval of one week of tapering.The result showed that a significant increase in both CK and BUN.Although the percentage of CD3~+,CD4~+,CD8~+and CD4~+/CD8~+ fluctuated,it all be inconsistent with the training load.There had increases in both IL-2 and IFN-gama mRNA in the early phase and significant decrease in the late phase.There had significant decrease in IL-10 mRNA in the training period.Serum testosterone had no significant changes during the training while Cortisol increased significantly as the training load was increased.Both LH and Prl had significant increased during the training,and FSH had significant decreased during the late phase.It concluded that the high volume weight training may inhibit the expression of IL-2,IFN-gama and IL-10 which related to the ability of antivirus,antinflammatory and T cell activation,and those indexes above can be used to value the competitive ability of athletes.The FSH and LH changed before T and,LH and FSH changed reversely during the heavy load weight training.T/C is more valuable than serum T in the valuation of competitive ability of athletes.