Comparsion of the effect of resistance program training with different intensities on serum irisin levels in sedentary young women

The aim of this study was to investigate the effect of resistance training with different intensities on serum irisin levels in sedentary young women. In this semi experimental study, 21 sedentary young women with range of 20-30 years and BMI 22-25 kg/m2 were selected by convenience sampling. Then, the volunteers were randomly assigned into two groups, [resistance training group with low intensity (40-60% of one repetition maximum) and high intensity (70-90% of one repetition maximum)]. The selected training included: 8 weeks, 3 times a week. Blood samples were obtained at baseline and 48 hours after at the end of the study. Data analysis was performed using SPSS software (version 15.0, SPSS). To make intra and between groups’ comparison, paired and independent student T test were used. For all statistical comparisons, the level of significance was considered at P0.05). Moreover, no significant changes were shown in body mass index and body fat percent in high-intensity training (P>0.05). While, the levels of irisin in high-intensity training reduced significantly (p=0.034). Variance between groups in variables irisin, BMI and body fat percent were not significant (P>0.05). These results suggest that the resistance training with low and high intensity ban not increase the levels of irisin in sedentary young women with BMI 22-25 kg/m2.