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This investigation was performed to study the effects of wrestling exercises in 90% - 95% heart rate reserve (HRR) and 80% - 85% HRR strength during
pre-competitive and competitive seasons on CD4+ and CD8+ lymphocytes,
CD4/CD8 ratio, white blood cells (WBC) numbers and percent age of lymphocytes, neutrophils, monocytes, eosinophils and cortisol concentration of young wrestlers. For this purpose 37 young wrestler. Were divided in to two grups using random sampling. The test group performed a special protocol of exercises during pre-competitive (12 weeks) and competitive season (4 weeks). The control group did not participate in any exercise. The peripheral blood was obtained in the end of each season before thd competition and two weeks after finishing the
exercises in resting situation and the mentioned factors were investigated in their
blood. The obtained results showed in resting condition both groups were similar considering the selected cell immune factors and cortisol concentration of serum. The results of this long-term study showed that cell immunity componets and serum cortisol of young wrestlers are influenced by severity of exercises and their immune system can be suppressed.