Assessment of selective under-reporting of food intake by both obese and non-obese women in a metabolic facility
Assessment of selective under-reporting of food intake by both obese and non-obese women in a metabolic facility
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DOI：
10.1038/sj.ijo.0800584
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发表时间：
1998-04-01
影响因子：
4.9
通讯作者：
Prentice, AM
中科院分区：
文献类型：
--
作者：
Poppitt, SD;Swann, D;Prentice, AM
目的：为了调查在肥胖和非肥胖受试者的食物摄入量低报的偏倚程度，假设低报可能是选择性的宏量营养素含量（碳水化合物（CHO），脂肪，蛋白质，酒精），特定的食物类型或饮食场合（膳食，零食）。设计：33名妇女（18名肥胖，15名非肥胖）被招募到一个长期停留的代谢设施24小时。随意食物摄入量在整个研究过程中进行了秘密测量，并在24 h结束时完成了报告的食物摄入量。结果：报告的每日总能量摄入量显着低于测量的摄入量。虽然准确地报告了膳食，但两餐之间吃的零食的能量被严重低估。（P < 0.001）报告的总碳水化合物和添加糖摄入量明显低于测量值，而报告的蛋白质和脂肪摄入量与测量值无显著差异。报告的酒精摄入量也大大低于测量，但高变异性防止significant.CONCLUSIONS：在肥胖和非肥胖妇女的主要原因，低报，作为评估的隐蔽研究设计的受试者限制在代谢设施，是未能报告餐间零食。有一些证据表明，高CHO的低报情况有所增加，但没有证据表明低报高脂肪或高蛋白食品的偏倚。
OBJECTIVE: To investigate the degree of bias in under-reporting of food intake in obese and non-obese subjects, hypothesising that under-reporting may be selective for either macronutrient content (carbohydrate (CHO), fat, protein, alcohol), specific food types or eating occasions (meals, snacks).DESIGN: Thirty-three women (18 obese, 15 non-obese) were recruited to a long-stay metabolic facility for 24 h. Ad libitum food intake was covertly measured throughout the study and a reported food intake completed at the end of 24 h.RESULTS: Reported total daily energy intake was significantly lower than measured intake. Whilst meals were accurately reported, energy from snack foods eaten between meals was significantly under-reported. (P < 0.001) Reported total carbohydrate and added sugar intakes were significantly lower than measured, whilst reported protein and fat intakes were not significantly different from measured. Reported alcohol intake was also considerably lower than measured, but high variability prevented significance.CONCLUSIONS: In both obese and non-obese women the major cause of under-reporting, as assessed by covert study design in subjects restricted within a metabolic facility, is the failure to report between-meal snack foods. There is some evidence for increased under-reporting in high CHO, but no evidence of a bias in under-reporting towards high fat or high protein foods.