The effects of 10 weeks of aerobic and yoga training on markers of insulin resistance in previously sedentary and overweight women
Poster Presentation XML
1ilam azad university
2Department of exercise physiology, Islamic Azad University, Ilam Branch
Introduction: Aerobic exercise training has been postulated to reduce markers of insulin resistance, but there is limited research directly comparing different types of training. Yoga training includes physical postures (asanas), breathing exercises (pranayama), relaxation and meditation. It is an ingenious technique to attain equilibrium and well-being of mental, physical, emotional and spiritual aspects, thereby improving lifestyle of the individual. Thus, the purpose of this study was to determine the effect of 10 weeks of yoga and aerobic training on markers of insulin resistance in previously sedentary and overweight women.
Methodology: In this study, 26 sedentary and overweight women (20-45 years old) were randomly divided into three groups: aerobic training (n = 9), yoga training (n = 9) and control (n = 8). Experimental groups performed 3 weekly sessions for 10 weeks, whereas the control grouped maintained a sedentary lifestyle. The aerobic training program consisted of running (20-40 minutes at 60-80% maximal heart rate). The yoga training program completed of 9 exercises for 20-40 minutes. Before and after training, in fasting state blood samples were taken for measuring serum levels of insulin, glucose and insulin resistance index (homeostasis model assessment of insulin resistance) from all subjects. Two-way ANOVA with repeated measures was used for data analysis.
Results: serum insulin, glucose levels and insulin resistance index did not change significantly in response to training. Compared to the baseline, insulin concentration and insulin resistance index were similarly and significantly decreased in both training groups. However, no significant change was observed in any of these variables in the control group.
Discussion: It seems that 10 weeks of aerobic and yoga training has a similar effect in improving insulin and insulin resistance index. These findings do not support the idea that an aerobic training decreases markers of insulin resistance more than yoga training in previously sedentary and overweight women.