Abstract
The aim of this study was to investigate the effect of endurance, resistance and concurrent trainings on plasma leptin levels of non-athlete males. In order to achieve the purpose, 48 male students in Tehran University with a mean age of 21/45 year were invited to participate in this study. Subjects were randomly assigned to three exercise groups, endurance group (12 = n), resistance training group (12 = n) and concurrent training group (12 = n) and a control group (12 = n). Height, weight, fat percentage, BMI index and VO2 max were determined before. Blood samples were taken in fasting state from all subjects. Then endurance group received endurance training for 8 weeks, 3 sessions per week with an intensity of 75-85% maximal heart rate. For Resistance training group also determined the 100 per cent power of individuals, first .Then were prescribed a percentage of maximum power during the exercise sessions for them. Concurrent group received both endurance and resistance training programs in one day. In order to compare pre-test results with post test results was used paired t-test and ANOVA. The results showed that all three methods of endurance, resistance and concurrent trainings caused a significant decrease in plasma leptin levels. Moreover, it became clear that in all three groups, according to F statistics and P values (982/0P =), There is no significant difference the effect of endurance, resistance and concurrent trainings on decrease of plasma leptin. So Regular physical activity (any type of endurance, resistance or concurrent trainings with a negative energy balance) is likely can lead to a decrease in leptin levels.