Document Type : Research Paper
Authors
1 Associated Professor of Sport Physiology, Alzahra University, Tehran
2 M.Sc. of Sport Physiology, Alzahra University, Tehran
3 Post Doc Researcher Sport physiology, Alzahra University, Tehran
Abstract
The purpose of this study was to investigate the effect of six weeks of high-intensity circuit training on serum Preptin levels and insulin resistance in overweight sedentary women. Twenty overweight students (age: 22.5 ± 3.6 yrs., weight: 74.1 ± 5.6 kg, BMI: 27.4 ± 0.9 kg/m2) randomly divided into two groups: control (N = 9) and high-intensity circuit training (N = 11). Training group performed 6 weeks (3 sessions. Week-1) of circuit training (6 stations, 2 set) while the control group continued their usual daily activities. Blood samples collected before and after the research period and using ELISA and Enzymatic colorimetric methods analyzed for determined factors. ANOVA with Repeated measures used as a statistical test at P < 0.05. In comparison to the control group, there was a significant decrease in serum Preptin (P = 0.049) and insulin (P = 0.008) in the training group. The reduction in fasting glucose (P = 0.54) and insulin resistance (P = 0.15) were not significant. Also, there was a significant relation between Preptin and insulin resistance changes (r = 0.48, P < 0.04). Based on these results six weeks of high-intensity circuit training is an effective factor over circulating levels of Preptin in overweight sedentary women. Given the relationship between Preptin and insulin resistance in this study, evaluating the circulating levels of this peptide is important in insulin resistance process.
Keywords
Main Subjects
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