短期运动和营养对肥胖少年部分代谢指标的影响

目的探讨不同干预手段对肥胖少年体质和部分代谢指标的影响。方法对94名超重和肥胖城区中学生分别实施为期10周的单纯营养、单纯运动以及运动结合营养的干预，比较受试者体质指标和部分代谢指标。结果运动、营养和运动结合营养干预均可降低体重指数、脂肪重量、体脂百分比，高密度脂蛋白胆固醇（HDL-C）水平下降。单纯运动组总胆固醇（TC）降低，空腹血清胰岛素（FINS）、胰岛素抵抗指数（HOMA-IR）、胰岛β细胞功能(HOMA-β)升高；单纯营养组TC、低密度脂蛋白胆固醇（LDL-C）降低；运动结合营养组TC、LDL-C降低，FINS、HOMA-β升高。结论10周运动结合营养改善血脂代谢的效果较好；运动、运动结合营养干预可有效改善超重/肥胖少年的胰岛素β细胞的分泌功能；但是3种干预方案对改善HDL-C及胰岛素抵抗的作用均不明显。

Effects of Short-term Aerobic Exercise and Nutrition on Physical Fitness and Metabolism of Obesity Adolescents

ObjectiveTo evaluate the effects of aerobic exercise, nutrition or both on physical fitness and metabolism in obesity adolescents. Methods94 overweight/obese adolescents (12～16 years old) underwent 10 weeks exercise alone, nutrition intervention alone, and exercise combined with nutrition, respectively. The physical and metabolism index were detected before and after intervention. ResultsThe body mass index (BMI), body fat, body fat% decreased in all the groups. Especially, exercise alone decreased total cholesterol (TC), increased fasting insulin (FINS), insulin resistance (HOMA-IR), and function of β-cells (HOMA-β). Nutrition alone decreased TC, low-density lipoprotein cholesterol (LDL-C). Exercise combined with nutrition decreased TC and LDL-C, increased FINS and HOMA-β. High-density lipoprotein cholesterol (HDL-C) tended to decrease in all the groups. ConclusionThe aerobic exercise and /or nutrition intervention can improve the lipid metabolism, Exercise can improve function of the β-cell of pancreas. But the effects of exercise and/or nutrition on HDL-C and insulin resistance are not satisfactory.