bakhtyar tartibian - Professor of Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Allameh Tabataba&#۰۳۹;i University, Tehran, Iran.
ahmad fasihi - PhD of Exercise Physiology, Department of Physical Education and sport science, Faculty of Psychology and Education Science, University of Mohaghegh Ardabili, Ardabil, Iran
Bahman Ebrahimi_Torkamani - PhD of Exercise Physiology, Department of Physical Education and sport science, Faculty of Psychology and Education Science, University of Mohaghegh Ardabili, Ardabil, Iran

Purpose: The aim of this study was compares the effects of ۱۰ weeks High Intensity Interval training (HIIT) and moderate intensity aerobic training (MIAT) on serum levels of homocysteine and some cardiovascular risk factors in overweight inactive men. Methods: In this semi-experimental study, nineteen overweight men voluntarily participated in this study and were randomly divided to ۲ Groups: High Intensity Interval training (HIIT) and moderate intensity aerobic training (MIAT). Subjects performed training programs for ۱۰ weeks, ۳ sessions per week. The levels of homocysteine and lipid profile were measured before and after ۱۰ weeks of training programs. For statistical data analysis, independent and paired t tests were used and considered significant at a p≤۰.۰۵.  Results: The results of this study showed that both High Intensity Interval training and moderate intensity aerobic training caused a significant reduction of homocysteine levels (P≤۰.۰۵). After ۱۰ weeks of high -intensity periodic exercise, cholesterol levels (p = ۰.۰۰۱), LDL (p = ۰.۰۰۲) decreased significantly and HDL levels were significantly increased (p = ۰.۰۰۱), In MIAT training group, only a significant reduction in cholesterol was found (P=۰.۰۰۶). Conclusion: According to the results of this study, it seems that both High Intensity Interval training and moderate intensity aerobic training have favorable effects in reducing body weight and some cardiovascular risk factors.

High-intensity interval training, lipid profile, Overweight, Homocysteine