Kaplan A S, Zemel B S, Stallings V A
Division of Gastroenterology and Nutrition, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, USA.
J Pediatr. 1996 Nov;129(5):643-7. doi: 10.1016/s0022-3476(96)70143-9.
To evaluate differences in resting energy expenditure (REE) of black and white prepubertal children.
The study subjects were 34 prepubertal children 5 to 12 years of age and weighing 90% to 206% ideal body weight. Girls represented 59% of the study subjects; 44% were white children and 56% were black children.
Fat-free mass (FFM), fat mass, and the percentage of body fat were determined by total body electrical conductivity. Fasting REE was measured by open-circuit indirect calorimetry.
Although weight, height, FFM, fat mass, percentage of body fat, and age were similar between the ethnic groups (black vs. white children), the black subjects had a significantly lower REE (1312 +/- 38 kcal/day) compared with the white subjects (1524 +/- 43 kcal/day) after adjusting for age, gender, weight, FFM, and fat mass. Fat-free mass and ethnic group were the only significant predictors of REE (R2 = 0.70).
Resting energy expenditure is significantly higher in this sample of white children compared with the black children after adjusting for body size and composition. Both FFM and ethnic background were significant determinants of REE in prepubertal children.
评估青春期前黑人儿童与白人儿童静息能量消耗（REE）的差异。
研究对象为34名5至12岁的青春期前儿童，体重为理想体重的90%至206%。女孩占研究对象的59%；44%为白人儿童，56%为黑人儿童。
通过全身电阻抗法测定去脂体重（FFM）、脂肪量和体脂百分比。空腹REE通过开路间接量热法测量。
尽管不同种族（黑人与白人儿童）之间的体重、身高、FFM、脂肪量、体脂百分比和年龄相似，但在调整年龄、性别、体重、FFM和脂肪量后，黑人受试者的REE（1312±38千卡/天）显著低于白人受试者（1524±43千卡/天）。去脂体重和种族是REE的唯一显著预测因素（R2 = 0.70）。
在调整身体大小和组成后，该样本中白人儿童的静息能量消耗显著高于黑人儿童。去脂体重和种族背景都是青春期前儿童REE的重要决定因素。
