Background: Efficient exercises for enhancing lipolysis could be implemented in the measures taken regarding obesity reduction and the related risk factors. The present study was conducted to compare the response of lipolysis inhibitory and excitatory hormones, including insulin, epinephrine, and glycerol, as index of lipolysis to high-intensity interval resistance exercise (HIIRE) and traditional resistance exercise (TRE) protocols in overweight girls.
Methods: This was a kind of acute and semi experimental study, which was performed during the winter of 2019. Eleven overweight young girls with a mean weight of 68.54±4.3 kg participated in this study objectively and voluntarily. The participants took part in HIIRE and TRE programs separately with at least a one-week interval. Blood samples were taken before and immediately after an exercise session in order to measure the levels of epinephrine, insulin, and glycerol. For analysis of the data, we utilized statistical method of paired t-test.
Results: Statistical analysis of the data revealed a reduction in the level of insulin (P=0.009) and an increase in that of glycerol (P=0.04) after HIIRE. There were no significant changes in epinephrine following HIIRE (P=0.75) and TRE (P=0.15). Moreover, there were no significant differences concerning the changes of epinephrine (P=0.93), insulin (P=0.15), and glycerol (P=0.13) between HIIRE and TRE protocols (P>0.05).
Conclusions: Regarding the decrease in lipolysis inhibitor (insulin) and the increase in glycerol, as an index of adipose lipolysis following HIIRE, it could be recommended as an effective exercise for reducing adiposity.