BODY-MASS INDEX AS A MEASURE OF BODY FATNESS - AGE-SPECIFIC AND SEX-SPECIFIC PREDICTION FORMULAS
BODY-MASS INDEX AS A MEASURE OF BODY FATNESS - AGE-SPECIFIC AND SEX-SPECIFIC PREDICTION FORMULAS
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DOI：
10.1079/bjn19910073
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发表时间：
1991-03-01
影响因子：
3.6
通讯作者：
SEIDELL, JC
中科院分区：
文献类型：
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作者：
DEURENBERG, P;WESTSTRATE, JA;SEIDELL, JC
研究对象1229人，男性521人，女性708人，体重指数（BMI）范围较广（13.9 ~ 40.9 kg/m2），年龄范围7 ~ 83岁，采用密度测量法和人体测量法测定体成分。在考虑年龄和性别（男性= 1，女性= 0）的情况下，分析了密度测定体脂率（BF%）与BMI之间的关系。对于15岁及以下的儿童，这种关系与成人不同，因为儿童的体重指数与身高有关。儿童BF%的预测公式为：BF% = 1.51 × BMI-0.70 ×年龄-3.6 ×性别+ 1.4 （R2 0.38，估计SE (SEE) 4.4% BF%）。成人预测公式为：BF% = 1.20 × BMI + 0.23 ×年龄- 10.8 ×性别- 5.4 （R2 0.79, SEE = 4.1% BF%）。预测公式的内部和外部交叉验证表明，它们给出了所有年龄段男性和女性体脂的有效估计。然而，在肥胖受试者中，预测公式略微高估了BF%。预测误差与其他估计BF%的方法（如皮褶厚度测量或生物电阻抗）的预测误差相当。
In 1229 subjects, 521 males and 708 females, with a wide range in body mass index (BMI; 13.9-40.9 kg/m2), and an age range of 7-83 years, body composition was determined by densitometry and anthropometry. The relationship between densitometrically-determined body fat percentage (BF%) and BMI, taking age and sex (males = 1, females = 0) into account, was analysed. For children aged 15 years and younger, the relationship differed from that in adults, due to the height-related increase in BMI in children. In children the BF% could be predicted by the formula BF% = 1.51 x BMI-0.70 x age-3.6 x sex + 1.4 (R2 0.38, SE of estimate (SEE) 4.4% BF%). In adults the prediction formula was: BF% = 1.20 x BMI + 0.23 x age - 10.8 x sex - 5.4 (R2 0.79, SEE = 4.1% BF%). Internal and external cross-validation of the prediction formulas showed that they gave valid estimates of body fat in males and females at all ages. In obese subjects however, the prediction formulas slightly overestimated the BF%. The prediction error is comparable to the prediction error obtained with other methods of estimating BF%, such as skinfold thickness measurements or bioelectrical impedance.