The effect of one bout of incremental exercise on salivary immunoglobulin A (IgA) of high school students

Objective: The aim of present study is study the effect of one bout incremental exercise on salivary IgA changes in boy athlete and no athlete high school students. Design: 15 no athlete and 30 athlete (15 wrestlers, 15 endurance runners) students were selected as subject randomly among students of Neishabur city in Iran. Subject ran on the treadmill to exhaustion range using Bruce protocol. Four milliliter unstimated saliva was collected pre, immediately and 2 hour after exercise. Results: The result showed that one bout incremental exercise caused significant increase in S-IgA concentration in non-athlete and endurance runners groups, and this increase continued to 2 hours after exercise. There was significant increase in S-IgA concentration in wrestlers group after activity. S-IgA concentration decreased after 2 hours of activity, but it did not reach to initial levels of pre-activity, this different was statically significant. Conclusion: Based on these findings, it is inferred that one bout incremental exercise in young students had no suppressor effect on the mucosal immune system and there is no probability of existence of the upper respiratory tract infection following this activities