Objective: This study was done to investigate the effects of one session exhaustive aerobic activity on changes of salivary immunoglobulin A and total protein in adolescent recreational athletes.
Method: This study was of type semi-empirical research. Subjects included 20 male adolescent athletes, 14 year old, healthy volunteers who were justified as to the goals and methodology of the study. The subjects were randomly divided into two aerobic (n=10) and control (n=10) groups. For aerobic activity the shuttle run test was used, the control group did not have any physical exercise during the investigation. Saliva samples were collected before and immediately after shuttle run test. The data were analyzed using variance analysis with repeated measures
Results: Comparison of pre-test and post-test aerobic exercise group showed that there was no significant change in salivary IgA concentration(P>0/05), However, the salivary total protein(P < 0/001) increased and the salivary ratio IgA to total protein(P < 0/001) decreased significantly. Changes IgA, total protein and IgA relative to total protein in saliva did not show a significant difference between the aerobic and control groups.
Conclusion: According to the findings of the present study it can be concluded that short duration exhaustive aerobic activity has no significant effect on muscosal immunity of adolescents and do not have destructive effects on them. Thus, it is recommended that coaches and physical education teachers prescribe these activities for adolescents with low intensity.