Grund A, Vollbrecht H, Frandsen W, Krause H, Siewers M, Rieckert H, Müller M J
Institut für Humanernährung und Lebensmittelkunde (Abteilung Ernährung des Menschen) der Christian-Albrechts Universität zu Kiel, Germany.
Int J Obes Relat Metab Disord. 2000 Mar;24(3):299-305. doi: 10.1038/sj.ijo.0801127.
There are limited and controversial data on the influence of gender on metabolic rate in prepubertal children.
To assess the effect of gender on resting energy expenditure (REE), activity-related energy expenditure (AEE), total energy expenditure (TEE) and physical activity level (PAL) in free-living prepubertal children.
Cross-sectional study.
40 prepubertal children (24 boys, 16 girls, 4-11 y old (mean age: 7.0 +/- 1.2 y), BMI 13.1-32.0 kg/m2).
Energy expenditure was measured by the combination of indirect calorimetry and individually calibrated 24 h heart rate monitoring. Body composition was assessed by anthropometrics and bioelectrical impedance analysis. Socio-cultural and socio-economic factors, as well as activities of daily living, were estimated by questionnaire for the parents. Boys and girls were matched for fat-free mass (FFM, boys: 25.9 +/- 8.5 kg; and girls: 24.4 +/- 4.5 kg, n.s.) and fat mass (FM, boys: 11.6-5.9 kg; and girls: 10.8 +/- 3.3 kg, n.s.).
We found no sex difference in REE, AEE and TEE. PAL was 1.4 +/- 0.3 for boys and 1.2 +/- 0.4 for girls. REE and TEE were significantly related to FFM (r=0.62, r=0.81, r=0.60). FFM was found to be the most significant determinant of REE (r2=0.70). REE accounted for the largest part of the variance in TEE (r2=0.46). Gender had no significant effect.
There is no effect of gender on energy expenditure in prepubertal children.
关于性别对青春期前儿童代谢率的影响，现有数据有限且存在争议。
评估性别对自由生活的青春期前儿童静息能量消耗（REE）、活动相关能量消耗（AEE）、总能量消耗（TEE）和身体活动水平（PAL）的影响。
横断面研究。
40名青春期前儿童（24名男孩，16名女孩，4 - 11岁（平均年龄：7.0±1.2岁），BMI 13.1 - 32.0 kg/m²）。
通过间接测热法和个体校准的24小时心率监测相结合来测量能量消耗。通过人体测量学和生物电阻抗分析评估身体成分。通过向家长发放问卷来估计社会文化和社会经济因素以及日常生活活动。男孩和女孩在去脂体重（FFM，男孩：25.9±8.5 kg；女孩：24.4±4.5 kg，无显著差异）和脂肪量（FM，男孩：11.6 - 5.9 kg；女孩：10.8±3.3 kg，无显著差异）方面进行匹配。
我们发现REE、AEE和TEE没有性别差异。男孩的PAL为1.4±0.3，女孩为1.2±0.4。REE和TEE与FFM显著相关（r = 0.62，r = 0.81，r = 0.60）。发现FFM是REE的最显著决定因素（r² = 0.70）。REE占TEE方差的最大部分（r² = 0.46）。性别没有显著影响。
性别对青春期前儿童的能量消耗没有影响。
