Visser M, De Groot L C, Deurenberg P, Van Staveren W A
Department of Human Nutrition, Wageningen Agricultural University, The Netherlands.
Br J Nutr. 1995 Dec;74(6):775-85.
The objective of the present study was to validate energy intake data, obtained by dietary history, in twelve elderly women aged 69-82 years. Energy and protein intakes were obtained using the dietary history method with a reference period of 30 d. Reported energy intake was compared with total energy expenditure (TEE) measured on two consecutive days in a respiration chamber. Reported protein intake was compared with mean N excretion from four 24 h urine collections. Mean reported energy intake was 7.2 (SD 1.5) MJ/d which was lower than TEE (P = 0.059). Reported protein intake was 64 (SD 13) g/d and lower than estimated protein intake (P = 0.053). The percentage underestimation was not related to body weight or percentage body fat. Subjects with a relatively high TEE or a relatively high estimated protein intake underestimated their energy intake to a greater extent. The discrepancy between reported energy intake and TEE was positively associated with the discrepancy between reported and estimated protein intakes. The results of this present study show an underestimation of energy intake of about 12% when using the dietary history method. Physical activity diaries completed in the chamber and during 4 d at home, as well as pedometer counts, indicated a higher level of physical activity in the free-living situation compared with the chamber situation. This suggests that the actual underestimation of energy intake may be even higher in this group of elderly women. These results have implications for the use of the dietary history method in, for example, epidemiological studies carried out in elderly subjects.
本研究的目的是验证通过饮食史获得的12名年龄在69 - 82岁老年女性的能量摄入数据。采用饮食史方法，参考期为30天，获取能量和蛋白质摄入量。将报告的能量摄入量与在呼吸室内连续两天测量的总能量消耗（TEE）进行比较。将报告的蛋白质摄入量与四次24小时尿液收集的平均氮排泄量进行比较。报告的平均能量摄入量为7.2（标准差1.5）MJ/天，低于TEE（P = 0.059）。报告的蛋白质摄入量为64（标准差13）克/天，低于估计的蛋白质摄入量（P = 0.053）。低估的百分比与体重或体脂百分比无关。TEE相对较高或估计蛋白质摄入量相对较高的受试者能量摄入量低估程度更大。报告的能量摄入量与TEE之间的差异与报告的和估计的蛋白质摄入量之间的差异呈正相关。本研究结果表明，使用饮食史方法时能量摄入量低估约12%。在室内和在家中4天完成的身体活动日记以及计步器计数表明，与室内情况相比，自由生活状态下的身体活动水平更高。这表明在这组老年女性中，能量摄入量的实际低估可能更高。这些结果对饮食史方法在例如老年受试者流行病学研究中的应用具有启示意义。
