[ effect of high intensity interval training [HIIT] and pilates on levels of irisin and insulin resistance in overweight women]

ABSTRACT

Effects of Phenotypic changes in adipose tissue due to training are a new theory. However, the cellular - molecular mechanisms for these phenotypic changes are not yet clearly understood. The purpose of the study was to determine the effect of high intensity interval training [HIIT] and Pilates on levels of Irisin and Insulin resistance in overweight women. This study was a Quasi-experimental research with a pre-post testing. Twenty-one overweight women, aged >/= 29.55 years were divided into two groups High intensity interval training [N=12] and Pilates [N=9] groups. The first group performed one session of Vo2max testing for 30 s [15 s the with 120% of maximum aerobic speed and 15 s rest], while second group performed one session of Pilates. Following the second blood sampling, data analysis was performed with p values<0.05 considered significant. Results of this study show that Irisin levels increased significantly after exercise only in the HIIT group [P=0.039, t11= 2.3]. Immediately after exercise insulin resistance increased and decreased respectively in the HIIT and Pilates groups, but changes were not statistically significant [P>0.05]. Based on the findings, levels of Irisin increase in overweight women, whereas those of insulin resistance do not