Weight-Loss Induced Changes in Physical Activity and Activity Energy Expenditure in Overweight and Obese Subjects before and after Energy Restriction
Weight-Loss Induced Changes in Physical Activity and Activity Energy Expenditure in Overweight and Obese Subjects before and after Energy Restriction
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DOI：
10.1371/journal.pone.0059641
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发表时间：
2013-03-21
期刊：
影响因子：
3.7
通讯作者：
Westerterp, Klaas R.
中科院分区：
文献类型：
--
作者：
Bonomi, Alberto G.;Soenen, Stijn;Westerterp, Klaas R.
活动能量消耗(AEE)是日常能量消耗的组成部分，主要受身体活动量(PA)和身体移位重量的影响。本研究旨在分析体重减轻对PA和AEE的影响。对66名超重和肥胖受试者分别在基线和67%能量限制12周后测量体重和PA。使用三轴运动登记加速度计(Tracmor)测量Pa值，并以活动计数进行量化。使用分类算法对Tracmor记录进行处理，以识别白天从事的6种常见活动类型。基于示踪输出的双标记水验证方程被用来估算AEE。体重减轻后体重下降13+/-4%，每日活动次数增加9%(95%可信区间：+2%，+15%)，且这种增加与体重下降的相关性较弱(R2=7%；P
Activity energy expenditure (AEE) is the component of daily energy expenditure that is mainly influenced by the amount of physical activity (PA) and by the weight of the body displaced. This study aimed at analyzing the effect of weight loss on PA and AEE. The body weight and PA of 66 overweight and obese subjects were measured at baseline and after 12 weeks of 67% energy restriction. PA was measured using a tri-axial accelerometer for movement registration (Tracmor) and quantified in activity counts. Tracmor recordings were also processed using a classification algorithm to recognize 6 common activity types engaged in during the day. A doubly-labeled water validated equation based on Tracmor output was used to estimate AEE. After weight loss, body weight decreased by 13 +/- 4%, daily activity counts augmented by 9% (95% CI: +2%, +15%), and this increase was weakly associated with the decrease in body weight (R-2=7%; P