Day-to-Day Variation in Food Intake and Energy Expenditure in Healthy Women: The Dietitian II Study
Day-to-Day Variation in Food Intake and Energy Expenditure in Healthy Women: The Dietitian II Study
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DOI：
10.1016/j.jand.2013.07.001
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发表时间：
2013-11-01
影响因子：
4.8
通讯作者：
Bray, George A.
中科院分区：
文献类型：
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作者：
Champagne, Catherine M.;Han, Hongmei;Bray, George A.
由于每天的食物摄入量不同，我们测试的假设，随意食物摄入量和能量消耗显示纠正反应在1至10天的健康年轻女性。每天收集15名年轻女性的食物摄入量和加速度测量值，持续17天。还测量了使用双标记水的每日总能量消耗（TDEE）。将常量营养素和能量摄入量以及能量消耗与平均值的每日偏差与在随后的时间间隔内观察到的偏差进行比较，以估计校正响应。能量摄入的个体内变异系数平均为+/-25%，范围为16%至34%。TDEE的变异系数为8.3%，加速度计的变异系数为8.4%（范围= 4.6%至16.4%）。通过加速度计测量的能量消耗（2，087 +/-191千卡/天）与TDEE（2，128 +/-177千卡/天）没有显著差异，但报告的每日能量摄入量低20.4%（1，693 +/-276千卡/天）。有显着的纠正反应，从脂肪和总能量摄入的能量。这发生在第3天至第6天，第5天达到峰值，当数据在每例受试者中随机分配时消失。人类对平均能量和大量营养素摄入量的偏差表现出纠正反应，滞后时间为3至6天，而不是1至2天。这些纠正反应可能在实现体重稳定方面发挥作用。
Because day-to-day food intake varies, we tested the hypothesis that ad libitum food intake and energy expenditure show corrective responses over periods of 1 to 10 days in healthy young women. Food intake and accelerometry measurements were collected daily for 17 days in 15 young women. Total daily energy expenditure (TDEE) using doubly labeled water was also measured. The daily deviations in macronutrient and energy intake and energy expenditure from the average values were compared with the deviations observed over succeeding intervals to estimate the corrective responses. The intraindividual coefficients of variation for energy intake averaged +/- 25%, ranging from 16% to 34%. TDEE had a coefficient of variation of 8.3%, and accelerometry had a coefficient of variation of 8.4% (range=4.6% to 16.4%). Energy expenditure by accelerometry (2,087 +/- 191 kcal/day) was not significantly different from TDEE (2,128 +/- 177 kcal/day), but reported daily energy intake was 20.4% lower (1,693 +/- 276 kcal/day). There were significant corrective responses in energy from fat and total energy intake. This occurred from Days 3 to 6, with a peak at Day 5 that disappeared when data were randomized within each subject. Human beings show corrective responses to deviations from average energy and macronutrient intakes with a lag time of 3 to 6 days, but not 1 to 2 days. These corrective responses are likely to play a role in bringing about weight stability.