Under- and overreporting of energy intake using urinary cations as biomarkers: Relation to body mass index
Under- and overreporting of energy intake using urinary cations as biomarkers: Relation to body mass index
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DOI：
10.1093/aje/152.5.453
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发表时间：
2000-09-01
影响因子：
5
通讯作者：
Kesteloot, H
中科院分区：
文献类型：
--
作者：
Zhang, JJ;Temme, EHM;Kesteloot, H
通过使用24小时尿钠和钾作为生物标志物，研究了与体重指数（BMI, kg/m(2)）相关的能量摄入少报和多报。这些数据来自于参加1981-1984年在比利时进行的比利时大学间营养与健康研究的2124名男性和1998名女性，年龄在25-74岁之间。饮食摄入与尿中钠和钾排泄的比值，作为相对少报的衡量指标，与BMI呈负相关（男性钠比β = -0.019，钾比β = -0.026；女性钠比β = -0.017，钾比β = -0.019，均p < 0.0001），与年龄、吸烟、饮酒和教育水平无关。由于77%的膳食钾被报告通过尿液排出，因此（膳食钾x 0.77）/尿钾比值为1的受试者为过度报告。低报的百分比随着BMI性别特异性十分位数的增加而增加（β = 1.88, p < 0.0001），并且在20个十分位数中有13个高于高报的百分比。在BMI为25.4时，报告不足和报告过多的比例相等。综上所述，能量摄入的相对少报和少报比例随着BMI的增加而增加。
Under- and overreporting of energy intake in relation to body mass index (BMI, kg/m(2)) were examined by using 24-hour urinary sodium and potassium as biomarkers. The data were obtained from 2,124 men and 1,998 women aged 25-74 years who participated in the 1981-1984 Belgian Interuniversity Research on Nutrition and Health study conducted in Belgium. The ratios of dietary intake to urinary excretion of sodium and potassium, as a measure for relative underreporting, were inversely associated with BMI (for men, beta = -0.019 for sodium ratio and beta = -0.026 for potassium ratio; for women, beta = -0.017 for sodium ratio and beta = -0.019 for potassium ratio; all p < 0.0001) independent of age, smoking, alcohol intake, and educational level. Since 77% of dietary potassium was reported to be excreted in the urine, subjects for whom the (dietary potassium x 0.77)/urinary potassium ratio was 1 as overreporters. The percentage of underreporters increased with increasing pooled sex-specific deciles of BMI (beta = 1.88, p < 0.0001) and was higher than the percentage of overreporters in 13 of 20 deciles. At a BMI of 25.4, the percentage of under- and overreporters equalized. In conclusion, the relative underreporting of energy intake and the percentage of underreporters increased with increasing BMI.