de Waart F G, Li R, Deurenberg P
Department of Human Nutrition, Wageningen Agricultural University, The Netherlands.
Br J Nutr. 1993 May;69(3):657-64. doi: 10.1079/bjn19930067.
Fat-free mass (FFM) was estimated in forty-seven premenopausal Chinese women, aged 18-43 years, from anthropometric data (skinfolds, body mass index (weight/height2; BMI)) or bioelectrical impedance, using several prediction formulas for body composition from the literature, and values compared with the mean of these three individual methods used as a frame of reference. In thirty-six women these values could be compared with FFM calculated from total body water (TBW) determined by D2O dilution. The prediction formulas used were developed from studies on Caucasian adults and their validity will have to be shown in populations with different ethnic backgrounds. The mean difference between FFM predicted from BMI and the frame of reference was 0.1 kg (95% confidence interval (CI) -0.1, 0.4), from bioelectrical impedance it was 0.5 kg (95% CI 0.3, 0.7), and from skinfolds it was -0.6 kg (95% CI -0.9, -0.4). The mean difference between FFM calculated from TBW and the frame of reference was higher (2.2 kg, 95% CI 1.2, 3.3). The results of the present study indicate that the three methods may be valid for predicting body composition in adult Chinese females, but further research is needed on development and cross-validation of prediction equations for body composition for Chinese.
对47名年龄在18至43岁的中国绝经前女性，根据人体测量数据（皮褶厚度、体重指数（体重/身高²；BMI））或生物电阻抗，采用文献中几种身体成分预测公式估算无脂肪量（FFM），并将这些值与这三种单独方法的平均值进行比较，以此作为参考标准。在36名女性中，这些值可与通过重水（D2O）稀释法测定的总体水（TBW）计算得出的FFM进行比较。所使用的预测公式是根据对高加索成年人的研究得出的，其有效性还需在不同种族背景的人群中加以验证。根据BMI预测的FFM与参考标准之间的平均差值为0.1千克（95%置信区间（CI）-0.1, 0.4），根据生物电阻抗预测的为0.5千克（95% CI 0.3, 0.7），根据皮褶厚度预测的为-0.6千克（95% CI -0.9, -0.4）。根据TBW计算的FFM与参考标准之间的平均差值更高（2.2千克，95% CI 1.2, 3.3）。本研究结果表明，这三种方法可能适用于预测成年中国女性的身体成分，但还需要对中国人群身体成分预测方程的开发和交叉验证进行进一步研究。
