Physical activity and weight gain prevention.
Physical activity and weight gain prevention.
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DOI：
10.1001/jama.2010.312
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发表时间：
2010-03-24
影响因子：
120.7
通讯作者：
Buring, Julie E.
中科院分区：
文献类型：
--
作者：
Lee, I-Min;Djousse, Luc;Sesso, Howard D.;Wang, Lu;Buring, Julie E.
防止长期体重增加所需的体力活动量尚不清楚。2008年，联邦指南建议每周进行≥ 150分钟（7.5 MET-hr/周）的中等强度活动，以获得“实质性的健康益处”。研究不同体力活动量与正常饮食女性长期体重变化的关系。前瞻性队列研究，随访了1992-2007年的34，079名健康美国女性（平均年龄54.2岁）。在基线、36个月、72个月、96个月、120个月、144个月和156个月的随访中，女性报告了她们的体力活动和体重。女性被分为每周活动量<7.5、7.5-<21和≥21 MET-hr。重复测量回归前瞻性地检查了平均3年时间间隔内的体力活动和体重变化。体重变化。在整个研究过程中，女性平均体重增加了2.6公斤。在多变量分析中，与消耗≥21 MET-小时/周的妇女相比，消耗7.5-<21和<7.5 MET-小时/周的妇女在3年的平均间隔内分别增加了0.11 kg（SD=0.04; P=0.003）和0.12 kg（SD=0.04; P=0.002）。体重指数（BMI）之间存在显著的相互作用，BMI <25 kg/m2的女性活动水平和体重增加之间存在反向剂量反应关系（P，趋势<0.0001），但体重较重的女性之间没有相关性（BMI 25-29.9和≥30.0 kg/m2的P，趋势分别为0.56和0.50）。共有4，540名女性（13.3%）开始研究时BMI <25 kg/m2，并成功保持体重，整个过程中体重增加<2.3 kg;他们在研究期间的平均活动水平为21.5 MET-hr/周（约60分钟/天中等强度活动）。在日常饮食的女性中，仅在BMI <25 kg/m2的女性中，体力活动与体重增加较少相关。在研究期间，成功维持正常体重并在13年内增重<2.3 kg的女性平均每天进行约60分钟的中等强度活动。
The amount of physical activity needed to prevent long-term weight gain is unclear. In 2008, federal guidelines recommended ≥150min/week (7.5 MET-hr/week) of moderate-intensity activity for “substantial health benefits”. To examine the association of different amounts of physical activity with long-term weight changes among women consuming a usual diet. Prospective cohort study, following 34,079 healthy, US women (mean age, 54.2 years) from 1992–2007. At baseline, 36-, 72-, 96-, 120-, 144- and 156-months’ follow-up, women reported their physical activity and body weight. Women were classified as expending <7.5, 7.5-<21, and ≥21 MET-hr/week of activity at each time. Repeated measures regression prospectively examined physical activity and weight change over intervals averaging 3 years. Change in weight. Women gained a mean of 2.6 kg throughout the study. In multivariate analysis, compared with women expending ≥21 MET-hr/week, those expending 7.5-<21 and <7.5 MET-hr/week gained 0.11 kg (SD=0.04; P=0.003) and 0.12 kg (SD=0.04; P=0.002), respectively, over a mean interval of 3 years. There was a significant interaction by body mass index (BMI), such that there was an inverse dose-response relation between activity levels and weight gain among women with BMI <25 kg/m2 (P, trend <0.0001), but no relation among heavier women (P, trend=0.56 and 0.50, respectively, for BMI 25–29.9 and ≥30.0 kg/m2). A total of 4,540 women (13.3%) began the study with BMI <25 kg/m2 and successfully maintained their weight, gaining <2.3 kg throughout; their mean activity level over the study was 21.5 MET-hr/week (~60 min/day moderate-intensity activity). Among women consuming a usual diet, physical activity was associated with less weight gain only among women with BMI <25 kg/m2. Women successful in maintaining normal weight and gaining <2.3 kg over 13 years averaged ~60 min/day of moderate-intensity activity over the study duration.
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影响因子：
120.7
作者：
Cook, NR;Lee, IM;Buring, JE
通讯作者：
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影响因子：
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