基础代谢率
双标水
能量平衡
统计
能量(信号处理)
津贴(工程)
卡路里
数学
膳食参考摄入量
生理学
动物科学
医学
生物
内分泌学
营养物
运营管理
生态学
经济
作者
G R Goldberg,A E Black,Susan A. Jebb,T J Cole,P R Murgatroyd,W A Coward,Andrew M. Prentice
出处
期刊:PubMed
日期:1991-12-01
卷期号:45 (12): 569-81
被引量:1903
摘要
This paper uses fundamental principles of energy physiology to define minimum cut-off limits for energy intake below which a person of a given sex, age and body weight could not live a normal life-style. These have been derived from whole-body calorimeter and doubly-labelled water measurements in a wide range of healthy adults after due statistical allowance for intra- and interindividual variance. The tabulated cut-off limits, which depend on sample size and duration of measurements, identify minimum plausible levels of energy expenditure expressed as a multiple of basal metabolic rate (BMR). CUT-OFF 1 tests whether reported energy intake measurements can be representative of long-term habitual intake. It is set at 1.35 x BMR for cases where BMR has been measured rather than predicted. CUT-OFF 2 tests whether reported energy intakes are a plausible measure of the food consumed during the actual measurement period, and is always more liberal than CUT-OFF 1 since it has to allow for the known measurement imprecision arising from the high level of day-to-day variability in food intake. The cut-off limits can be used to evaluate energy intake data. Results falling below these limits must be recognized as being incompatible with long-term maintenance of energy balance and therefore with long-term survival.
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