The effect of 6 months moderate aerobic training on some selective markers of immunity system of aged sedentary men

The purpose of this study was determining the effect of 6 months moderate aerobic training on VO2max and some selective markers of immunity system of aged sedentary men. For this aim, forty sedentary and healthy aged males (60-70 years) were selected voluntary and then randomly divided into two groups including: experimental group and control group. All subjects were taken vo2max test and blood sample (pretest). Afterward the experimental group performed moderate aerobic training three times a week for 6 months (the first 3 months with intensity 35-45%HRR and duration 20-30minutes and the second 3 months with 45-60%HRR and duration 30-40 minutes) and control group didn’t had any regular training program. Moreover, the above mentioned tests(vo2max and blood sampling) were taken at three months (midtest) and at 6 months(posttest) and number ofCD4 and CD8 cells and the CD4 / CD8 ratio were measured by flocytometry methods. Statistical analyses carried out on data by repeated measures ANOVA, & T student. The result of analysis showed that, aerobic training increase vo2max (29/5 %)(P<%5). and the amount of CD4 and CD8 in training group had increased significantly than the control group(the rate 28/5 and 33/95%)(P<%5). the CD4 /CD8 ratio in training group was significantly lower than the control group(the rate 8%)(P<%5). In conclusion, moderate aerobic running program may increase vo2max and immunity system markers in aged men.