Rodríguez G, Moreno L A, Sarría A, Pineda I, Fleta J, Pérez-González J M, Bueno M
Departamento de Pediatría, Facultad de Medicina, Universidad de Zaragoza, Spain.
J Physiol Biochem. 2002 Mar;58(1):9-15. doi: 10.1007/BF03179833.
Resting energy expenditure (REE) is the largest component of total daily energy expenditure. Objectives of this study were to examine whether differences in REE exist after obesity develops in a group of children and adolescents, and to determine the effects of body composition, gender, age, pubertal development and parental obesity on REE. In 116 Caucasian children and adolescents (57 obese and 59 non-obese), aged 7.8 to 16.6 years, REE was assessed by open-circuit indirect calorimetry and different anthropometric variables and bioelectrical impedance were obtained (weight, height, skinfold thicknesses, waist and hip circumferences). Anthropometric indices and body compartments were calculated: the body mass index, surface area (SA), fat-free mass (FFM), fat-mass (FM) and percentage of FM. Differences between obese and non-obese subjects were tested and stepwise multiple regression analysis was performed with REE as dependent variable. Results show that REE was significantly higher in obese than in non-obese children and adolescents but REE/FFM ratio was not significantly different between these groups. In the non-obese group, FFM explained 73.1% of the variability in REE and gender, age and SA added 3.8%, 2.6%, and 2.6% to it, respectively. In the obese group, FFM was also the most powerful predictor of REE with 72.3%, followed by waist circumference and age with 2.5% and 2.1%, respectively. These results show that REE differences between obese and lean children do not seem to justify the maintenance of obesity. The main determinant of REE is FFM in both groups. No significant contribution of FM, pubertal development or parental obesity in REE was found in children and adolescents.
静息能量消耗（REE）是每日总能量消耗的最大组成部分。本研究的目的是检查一组儿童和青少年肥胖发生后REE是否存在差异，并确定身体成分、性别、年龄、青春期发育和父母肥胖对REE的影响。在116名7.8至16.6岁的白种儿童和青少年（57名肥胖者和59名非肥胖者）中，通过开路间接测热法评估REE，并获取不同的人体测量变量和生物电阻抗数据（体重、身高、皮褶厚度、腰围和臀围）。计算人体测量指数和身体组成部分：体重指数、表面积（SA）、去脂体重（FFM）、脂肪量（FM）和FM百分比。测试肥胖和非肥胖受试者之间的差异，并以REE为因变量进行逐步多元回归分析。结果显示，肥胖儿童和青少年的REE显著高于非肥胖者，但这些组之间的REE/FFM比值无显著差异。在非肥胖组中，FFM解释了REE变异性的73.1%，性别、年龄和SA分别增加了3.8%、2.6%和2.6%。在肥胖组中，FFM也是REE的最有力预测因子，占72.3%，其次是腰围和年龄，分别占2.5%和2.1%。这些结果表明，肥胖和瘦儿童之间的REE差异似乎无法解释肥胖的持续存在。两组中REE的主要决定因素都是FFM。在儿童和青少年中，未发现FM、青春期发育或父母肥胖对REE有显著贡献。
