Tennefors C, Forsum E
Semper AB, Stockholm, Sweden.
Eur J Clin Nutr. 2004 Mar;58(3):541-7. doi: 10.1038/sj.ejcn.1601842.
To compare body fatness estimated using a skinfold technique and body mass index (BMI) with body fatness estimated using the body water dilution method in healthy Swedish children 9 or 14 months of age.
Total body fat (TBF) was calculated from total body water, estimated using the doubly labelled water method, and body weight. When expressed in per cent of body weight, these estimates (%TBF-BWD) represented reference values for body fatness. Body fatness was also calculated from skinfold thickness (%TBF-SFT) and as BMI. The children were ranked and grouped into five groups with an increasing level of body fatness using BMI, %TBF-SFT and %TBF-BWD, respectively.
A total of 30 infants 9 months of age and 29 children 14 months of age.
On average, the children (n=59) had a BMI=17.5+/-1.6 kg/m(2) and contained 27.8+/-3.7 %TBF-SFT and 29.1+/-4.4 %TBF-BWD. %TBF-BWD minus %TBF-SFT was=1.35+/-4.06%. By measuring %TBF-SFT or BMI, about 35% of the children could be classified in the correct group with respect to body fatness. Serious misclassification (ie two or more groups too high or too low) was, however, more common for %TBF-SFT (29%) than for BMI (17%).
The capacity of BMI to place children in the correct body fatness group was poor although not quite as poor as the corresponding capacity of the skinfold technique. The latter method produced inaccurate and imprecise estimates of body fatness.
比较在瑞典9个月或14个月大的健康儿童中，使用皮褶厚度技术和体重指数（BMI）估算的体脂率与使用身体水分稀释法估算的体脂率。
通过双标水法估算的全身水含量和体重来计算全身脂肪（TBF）。以体重百分比表示时，这些估算值（%TBF - BWD）代表体脂率的参考值。体脂率也可根据皮褶厚度（%TBF - SFT）和BMI进行计算。分别使用BMI、%TBF - SFT和%TBF - BWD将儿童按体脂率水平升序排列并分为五组。
共有30名9个月大的婴儿和29名14个月大的儿童。
平均而言，这些儿童（n = 59）的BMI为17.5±1.6 kg/m²，%TBF - SFT为27.8±3.7%，%TBF - BWD为29.1±4.4%。%TBF - BWD减去%TBF - SFT为1.35±4.06%。通过测量%TBF - SFT或BMI，约35%的儿童在体脂率分组上可被正确归类。然而，对于%TBF - SFT（29%），严重错误分类（即高出或低出两组或更多组）比BMI（17%）更为常见。
BMI将儿童正确归类到体脂率组的能力较差，尽管不如皮褶厚度技术相应的能力那么差。后一种方法对体脂率的估算不准确且不精确。
