Introduction: There are many different exercise methods have been developed to reach desired cardiovascular fitness, and one of them is interval training. The goal is, increasing aerobic fitness. In this case, alternative interval training in professional athletes causes to restore sources level(1). It is quoted worthy those two important factors for heights over 1600 meters are vo2 max and endurance performance(2). Due to lack of caudate oxygen in heights, hypoxia is made in which the immune system is affected by that(3).
Methodology: 24 students, 16-17 year old boys, in three HIIT groups, were put in hypoxia, normoxia and control conditions. The HIIT program was carried out for two weeks. Training sessions intensity was 85% maximum heart beats, included 8 one-minute running intervals, and two minutes rest between the intervals in first week. In week two, the same 8 running intervals were performed, with one minute rest between the intervals and the training sessions’ intensity was 90%. Blood sampling were made 48 hours before and after performing the training protocol, and measured by Alyssa method after that.
Results: Current study findings demonstrated that there was significant reduction in body mass index and fat percentage and significant increase in oxygen consumption in alternative hypoxia group. Also it showed that there was significant reduction in both active groups and just there was significant increase in inter leukin15 in hypoxia group.
Conclusion: Current study findings demonstrated that two weeks HIIT training in hypoxia condition caused significant enhancement in body composition amounts of vo2max and inter leukin15, and significant reduction in inter leukin6. So coaches and trainers can easily use respiratory masks which simulate height conditions in their training programs, to improve athletes’ fitness level.