How much physical activity is needed to minimize weight gain in previously obese women?
How much physical activity is needed to minimize weight gain in previously obese women?
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DOI：
10.1093/ajcn/66.3.551
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发表时间：
1997-09-01
影响因子：
7.1
通讯作者：
Kushner, RF
中科院分区：
文献类型：
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作者：
Schoeller, DA;Shay, K;Kushner, RF
在肥胖治疗的回顾性研究中，运动经常被认为是选择性减肥后体重维持的预测因素。我们进行了一项前瞻性研究，以测试减肥后不久测量的体力活动是否可以预测体重维持，并确定需要多少体力活动来优化维持。 32 名女性 [平均 (+/- SD) 年龄，38 +/- 7 岁；体重指数（以 kg/m(2) 为单位，24 +/- 3）是在达到减肥目标（23 +/- 9 kg）后 3 个月内通过当地广告招募的。总能量消耗（TEE）通过双标记水法测量。通过呼吸气体交换测量吸收后静息代谢率 (RMR) 和餐后 RMR [表示为进餐的热效应 (TEM)]。体力活动组中的女性（TEE 与 RMR 的比率 = 1.89 +/- 0.08）在达到减肥目标后的 12 个月内增加了 2.5 +/- 3.1 公斤，中等活动组的女性（TEE:RMR = 1.64 +/- 0.05）增加了 9.9 +/- 10.5 公斤，久坐的女性（TEE:RMR = 1.44 +/- 1.44 +/- 0.08）增加了 7.0 +/- 5.9 公斤（P < 0.01）。作为身体活动中消耗的能量的函数的体重恢复回顾性分析表明，体重维持的阈值为 47 kJ.kg 体重 (-1).d(-1)。这相当于平均每天 80 分钟的中等活动或 35 分钟/天的剧烈活动加上久坐的生活方式。
Exercise is frequently identified as a predictor of weight maintenance after elective weight loss in retrospective studies of treatments for obesity. We conducted a prospective study to test whether physical activity measured soon after weight loss predicted weight maintenance and to determine how much physical activity was required to optimize maintenance. Thirty-two women [mean (+/- SD) age, 38 +/- 7 y; body mass index (in kg/m(2)), 24 +/- 3] were recruited through local advertising within 3 mo of reaching their target for weight loss (23 +/- 9 kg). Total energy expenditure (TEE) was measured by the doubly labeled water method. Postabsorptive resting metabolic rate (RMR)and postprandial RMR [expressed as thermic effect of a meal (TEM)] were measured by respiratory gas exchange. Women in the physically active, group (ratio of TEE to RMR = 1.89 +/- 0.08) gained 2.5 +/- 3.1 kg during the 12 mo after reaching their target for weight loss, moderately active women (TEE:RMR = 1.64 +/- 0.05) gained 9.9 +/- 10.5 kg, and sedentary women (TEE:RMR = 1.44 +/- 0.08) gained 7.0 +/- 5.9 kg (P < 0.01). Retrospective analyses of weight regain as a function of energy expended in physical activity indicated a threshold for weight maintenance of 47 kJ.kg body wt(-1).d(-1). This corresponds to an average of 80 min/d of moderate activity or 35 min/d of vigorous activity added to a sedentary lifestyle.