Underreporting of habitual food intake is explained by undereating in highly motivated lean women
Underreporting of habitual food intake is explained by undereating in highly motivated lean women
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DOI：
10.1093/jn/129.4.878
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发表时间：
1999-04-01
影响因子：
4.2
通讯作者：
Westerterp, KR
中科院分区：
文献类型：
--
作者：
Goris, AHC;Westerterp, KR
少报习惯性食物摄入量可以通过少记录和/或少吃来解释。本研究旨在通过测量能量和水平衡来区分上述两种错误。24名苗条的女性营养师被招募为研究对象。测量1周的能量摄入和水分摄入，并记录称重饮食。通过静息代谢率的测量估计能量消耗，并使用三轴加速度计测量运动记录。用氘标记水估计失水。能量平衡是通过测量非记录周（记录周之前）和记录周期间的体重变化来确定的。平均能量和水分摄入量分别为8.5 +/- 1.0 MJ/d和2.3 +/- 0.5 L/d。未记录周的体重变化为0.1 +/- 0.6 kg，记录周的体重变化为-0.6 +/- 0.8 kg（配对1检验；P = 0.02），表明摄入不足16%。记录的摄水量加上计算的代谢水量与测量的失水量非常吻合（r = 0.93; P = 0.0001），表明记录精度高。综上所述，在高动力瘦女性的研究组中，有16%的人少报了习惯性食物摄入量，这可以用饮食不足来解释。
Underreporting of habitual food intake can be explained by underrecording and/or undereating. This study was designed to discriminate between the two errors mentioned, by measuring energy and water balance. Twenty-four lean female dieticians were recruited as subjects. Energy intake and water intake were measured for 1 wk with a weighed dietary record. Energy expenditure was estimated from measurements of resting metabolic rate, and measured physical activity with a triaxial accelerometer for movement registration. Water loss was estimated with deuterium-labeled water. Energy balance was determined by measuring the change in body mass over a nonrecording week (preceding the recording week) and over the recording week. Mean energy and water intake were 8.5 +/- 1.0 MJ/d and 2.3 +/- 0.5 L/d. The change in body mass in the nonrecording week was 0.1 +/- 0.6 kg and in the recording week -0.6 +/- 0.8 kg (paired 1 test; P = 0.02), indicating 16% undereating. Recorded water intake plus calculated metabolic water closely matched measured water loss (r = 0.93; P = 0.0001), which indicated a high recording precision. In conclusion, in the studied group of highly motivated lean women, there was 16% underreporting of habitual food intake, which could be explained by undereating.