超重和肥胖儿童的运动剂量和糖尿病风险:一个随机对照试验
Catherine L Davis1, Norman K Pollock, Jennifer L Waller
1Georgia Prevention Center, Institute for Public and Preventive Health, Department of Pediatrics, Medical College of Georgia, 1120 15th St, Ste 1640, Augusta, GA 30912, USA. cadavis@georgiahealth.edu
JAMA
|September 20, 2012
概括
超重儿童的有氧运动显著改善了健康状况,降低了胰岛素抵抗和身体脂肪. 每天20分钟和40分钟都显示出好处,更高的剂量可以使代谢健康略有改善.
科学领域:
- 儿科运动科学 儿科运动科学
- 儿童的新陈代谢健康
- 肥胖和健康研究 肥胖和健康研究
背景情况:
- 已知儿童有氧运动可以降低代谢风险.
- 关于儿童运动和代谢健康之间的剂量反应关系的数据有限.
研究的目的:
- 评估不同剂量的有氧训练对超重,久坐不动儿童的胰岛素抵抗,身体脂肪,内脏脂肪和健身的影响.
- 通过性别和种族来调查这些影响的潜在适度.
主要方法:
- 一项随机对照试验,涉及222名超重/肥胖的久坐儿童 (平均年龄9.4岁).
- 参与者被分配到低剂量 (20分钟/天),高剂量 (40分钟/天) 的有氧训练,或对照组13周.
- 主要结局包括曲线下的胰岛素面积 (AUC),有氧健身 (氧气消耗峰值),百分比体脂肪和内脏脂肪.
主要成果:
- 与对照人群相比,低剂量 (20分钟/天) 和高剂量 (40分钟/天) 的有氧训练都显著降低了胰岛素AUC,身体脂肪和内脏脂肪.
- 健身水平 (高峰氧气消耗) 在两个训练组中也显著改善.
- 在高剂量和低剂量组之间没有发现显著差异,影响在性别和种族之间是一致的.
结论:
- 在13周内每天进行20或40分钟的有氧训练有效地改善了超重/肥胖儿童的健身和代谢健康.
- 该研究表明,对胰岛素耐药性和脂肪性有剂量反应益处,两种测试剂量之间没有显著差异.
- 这些好处不论孩子的性别或种族都被观察到.
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