Wu Yifan, Yu Yingxiang, Xie Lan, Zhang Zhida, Chang Cuiqing
Department of Sports Medicine, Peking University Third Hospital; Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries; Beijing 100191, China.
Beijing Da Xue Xue Bao Yi Xue Ban. 2024 Apr 18;56(2):247-252. doi: 10.19723/j.issn.1671-167X.2024.02.007.
To compare the resting energy expenditure (REE) characteristics among young men with different body mass indexes (BMI).
Thirty young men [average age was (26.93±4.16) years] were enrolled in this study. They underwent resting metabolism tests in the Department of Sports Medicine of Peking University Third Hospital from December 2017 to June 2021. The resting metabolic rate (RMR) was measured by indirect calorimetry, the body composition was measured by bioresistance antibody component analyzer. The REE characteristics were analyzed, and 11 predictive equations were used to estimate RMR and compared with the measured value. The differences were analyzed by paired -test and intra-class correlation coefficient (ICC).
The RMR of the overall 30 young men was (1 960.17±463.11) kcal/d (1 kcal=4.186 8 kJ). Including (1 744.33±249.62) kcal/d in those with normal BMI, which was significantly lower than that in those who were overweight or obese [(2 104.06± 520.32) kcal/d, < 0.01], but the weight-corrected RMR in those with normal BMI was significantly higher than that in those who were overweight or obese [(24.02±2.61) kcal/(kg·d) . (19.98±4.38) kcal/(kg·d), < 0.01]. The RMR was significantly and positively correlated with body weight, adiposity, lean body mass, body surface area, and extracellular fluid in the subjects with diffe-rent BMI (all < 0.05). The predicted values of the 11 prediction equations were not in good agreement with the measured values (all ICC < 0.75), with relatively high agreement between the predicted and measured values of the World Health Organization (WHO) equation in overweight obese young men (ICC=0.547, < 0.01).
There were significant differences in RMR among young men with different BMI, and the RMR after weight correction should be considered for those who were overweight or obese. The consistency between the predicted values of different prediction equations and the actual measured values of RMR was relatively poor, and it is recommended to accurately measure RMR by indirect calorimetry. For overweight or obese young men, the WHO prediction equation can be considered to calculate RMR, but it is necessary to establish an RMR prediction equation applicable to different BMI populations.
比较不同体重指数（BMI）的年轻男性静息能量消耗（REE）特征。
本研究纳入30名年轻男性[平均年龄为（26.93±4.16）岁]。他们于2017年12月至2021年6月在北京大学第三医院运动医学科接受静息代谢测试。通过间接测热法测量静息代谢率（RMR），通过生物电阻抗抗体成分分析仪测量身体成分。分析REE特征，并使用11个预测方程估算RMR并与测量值进行比较。采用配对检验和组内相关系数（ICC）分析差异。
30名年轻男性的RMR为（1960.17±463.11）千卡/天（1千卡 = 4.1868千焦）。其中BMI正常者为（1744.33±249.62）千卡/天，显著低于超重或肥胖者[（2104.06±520.32）千卡/天，P < 0.01]，但BMI正常者的体重校正RMR显著高于超重或肥胖者[（24.02±2.61）千卡/（千克·天）.（19.98±4.38）千卡/（千克·天），P < 0.01]。不同BMI受试者的RMR与体重、体脂、去脂体重、体表面积和细胞外液均呈显著正相关（均P < 0.05）。11个预测方程的预测值与测量值一致性不佳（所有ICC < 0.75），世界卫生组织（WHO）方程在超重肥胖年轻男性中的预测值与测量值一致性相对较高（ICC = 0.547，P < 0.01）。
不同BMI的年轻男性RMR存在显著差异，超重或肥胖者应考虑体重校正后的RMR。不同预测方程的预测值与RMR实际测量值之间的一致性相对较差，建议采用间接测热法准确测量RMR。对于超重或肥胖的年轻男性，可考虑使用WHO预测方程计算RMR，但有必要建立适用于不同BMI人群的RMR预测方程。
