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Purpose: To evaluate the effect of a Resistance training program (BT) versus weight loss diet (DR) on body composition, insulin sensitivity and cardiovascular risk factors in obese adolescents. Methods: Thirty obese adolescents with a BMI above the 97th percentile participated in a training program and diet for 12 weeks. They were randomized into two groups: a diet group (DR, n = 16) with a caloric restriction of 500 kcal / day and Strength training group (BT, n = 14) for all major muscle groups, three sessions / week with an intensity of 50-80% (1.RM) for 3 months. Anthropometric and biochemical measurements were performed for all of our subjects before and after the intervention program of 12 weeks. Results: Significant variations of body composition parameters were observed in both groups. The decrease of BMI, body weight, fat mass and (WC) for the group (DR) was more important than the group (BT) (p <0.01 and p <0.05 respectively). Strength training significantly increases the sensitivity to insulin (HOMA-IR of group (BT), was 4.53 ± 1.2 before and 3.47 ± 1.4 after the training program (p <0.05)), while there was no significant change for the group (DR). 12 weeks of strength training, improves the plasma concentrations of TG and HDL-C the LDL-C/HDL-C reports, TC / HDL-C and HDL-C / TG (p <0.05). The diet of weight loss induced a significant decrease only for the TC and LDL-C. (4,46 ± 0.24 before to 4.15 ± 0.37 after and 2.68 ± 0.18 before to 2.42 ± 0.14 after (p <0.05) respectively). Conclusion: Strength training improves much more the sensitivity to insulin and cardiovascular risk factors than weight loss diet program. The latter is more effective for weight loss, BMI and body fat in obese adolescent boys.

iosr journal of pharmacy and biological sciences

Assess The Effect of Resistance Training Compared To a Weight Loss Diet Program, on Body Composition, Insulin Sensitivity and Cardio-Vascular Risk Factors In Obese Adolescents.