Comparison of levels of the humoral immune, testosterone, cortisol serum on semi endurance elite

Introduction and Intense exercise in general preparation and conditioning periods of pre-competition would affect athletes immune system. So, the aim of this study was tocompare the levels of serum IgA, IgG, IgM, testosterone and cortisol on semi-endurance elite runners during general preparation and competition phase of training. Thirteen semi-endurance elite male runners with an average age of 18.92±1.7 years volunteered to take part in this study. The runners participated in the selectedtraining for a period of 14 weeks and 12 seasons per a week (in the morning and afternoon). Blood samples were collected during the three phases of training (pre- preparation phase, postpreparationphase and after pre-competition phase). Data were analyzed by repeated measures and Bonferroni post hoc test, at a significance level of P<0
05. The training courses in the preparation and competition period, lead to the reduced but not significant in serum IgG levels in elite semi-endurance runners. The means of within groups in serum IgM levels during preparation period reduced significantly in elite endurance runners (P=0.004). During this period, there was no significant change in serum IgA levels; Cortisol levels during preparation pre-competition period in elite semiendurance runners changed significantly (P=0.041). During this period serum testosterone levels did not changed significantly.T/C ratio during preparation and pre-competition phase changed significantly (P=0.040).Discussion and Findings indicated that long and intensive exercises increases catabolic process and may weaken the immune system.