Changes of Plasma Visfatin and Insulin Resistance in Overweight and Obese Non-athlete Adolescents following an Eight- Week-Endurance Rope Training

Background and Objective: Visfatin is a secreted protein from visceral adipose tissue that has been linked to obesity and associated with health risk factors. The purpose of this study was to examine the effects of ۸ weeks of interval endurance rope training on plasma visfatin and insulin resistance in overweight non-athletic adolescents. Materials and Methods: In this semi-experimental study, ۳۶ healthy overweight and obese male adolescents were randomly assigned to experimental (n=۱۸) and control (n=۱۸) groups. The experimental group underwent ۸ weeks of interval endurance rope training (۴۵ min/d, ۴ d/wk). Blood samples were taken before and after the completion of exercise training to assess levels of visfatin, insulin resistance and lipid profiles. Independent T-test and Pearson correlation coefficient were used to analysis the data. Results: The results showed that ۸ weeks of interval endurance rope training decreased the plasma visfatin, body fat percent, BMI, insulin resistance, waist circumference and triglycerides levels in in the experimental group (P<۰.۰۵). Also, there was a significant and positive relationship between visfatin, body fat percent and plasma triglyceride levels (P<۰.۰۵). Conclusion: ۸ weeks of interval endurance rope training with decreased triglyceride, insulin resistance and obesity induced a significant reduction of plasma visfatin in overweight and obese adolescents. References ۱- Rezyipour A, Yousefi F, Mahmoodi M, Shakeri M. Relation of adolescent girls nutritional behaviors and physical activity to their understanding of their parents lifestyle. Magazine of Tehran Med-Scil. ۲۰۰۷ ۵: ۴۰۹-۱۶ (Persian). ۲- Eun Sung K, Jee-Aee Im, Kyoung Chul, et al. Improved insulin sensitivity and adiponectin level after exercise training in obese korean youth. 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Keywords:

Keywords: Interval Endurance rope jump , Visfatin , Insulin Resistance Index , Overweight , Adolescent , Obese