تغییرات ویسفاتین پلاسما و مقاومت به انسولین نوجوانان غیرورزشکار دارای اضافه وزن و چاق در طول 8 هفته تمرین استقامتی تناوبی طناب زنی

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 8 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, 36 healthy overweight and obese male adolescents were randomly assigned to experimental (n=18) and control (n=18) groups. The experimental group underwent 8 weeks of interval endurance rope training (45 min/d, 4 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 8 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<0.05). Also, there was a significant and positive relationship between visfatin, body fat percent and plasma triglyceride levels (P<0.05). Conclusion: 8 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 1- 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. 2007 5: 409-16 (Persian). 2- 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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