Walker S P, Grantham-McGregor S, Powell C, Fletcher P, Himes J H
Tropical Metabolism Research Unit, University of the West Indies, Mona, Kingston, Jamaica.
Eur J Clin Nutr. 1990 Oct;44(10):763-8.
Bioelectrical impedance (BIA) and anthropometric measurements were taken of 129 stunted and 32 non-stunted children aged 9-24 months in Kingston, Jamaica. The reliability of BIA in such young children was examined and the relationships between impedance and anthropometry were determined. The stunted children had significantly lower body mass index (BMI) and smaller triceps skinfolds than the non-stunted children, suggesting differences in body composition between the groups. Resistance was significantly higher in the stunted children than the non-stunted children and nutritional group (stunted or non-stunted) contributed significantly to the variance in resistance after controlling for length, weight, mid-upper arm circumference, triceps and subscapular skinfolds, age and sex. This suggests that there were differences in body composition and/or body shape between the groups beyond that measured by the anthropometric indices used. Total body water (TBW) was estimated using an equation for Jamaican children of comparable age. As a percentage of body weight the TBW estimates were the same for the two groups, a finding which is inconsistent with the anthropometric data.
对牙买加金斯敦129名9至24个月大的发育迟缓儿童和32名发育正常儿童进行了生物电阻抗（BIA）和人体测量。研究了BIA在这类幼儿中的可靠性，并确定了阻抗与人体测量之间的关系。发育迟缓儿童的体重指数（BMI）显著低于发育正常儿童，三头肌皮褶厚度也更小，这表明两组儿童的身体组成存在差异。发育迟缓儿童的电阻显著高于发育正常儿童，在控制了身长、体重、上臂中部周长、三头肌和肩胛下皮褶厚度、年龄和性别后，营养组（发育迟缓或发育正常）对电阻的方差有显著贡献。这表明，除了所使用的人体测量指标所测量的差异外，两组儿童在身体组成和/或体型方面还存在差异。使用适用于牙买加同龄儿童的公式估算了总体水（TBW）。以体重百分比计算，两组儿童的TBW估算值相同，这一结果与人体测量数据不一致。
