Basal Energy Expenditure of Chinese Healthy Adults: Comparison of Measured and Predicted Values

This study aimed to measure the basal energy expenditure (BEE) of Chinese healthy adults and establish an accurate predictive equation for this population. In total, 470 Chinese healthy adults had their BEE measured using the Cosmed K4b2 portable metabolic system. Multiple linear regression analysis...

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Bibliographic Details
Published in:Biomedical and environmental sciences 2020-08, Vol.33 (8), p.566-572
Main Authors: MAO, De Qian, WU, Jing Huan, HUANG, Cheng Yu, LI, Ke Ji, LIU, Xiao Li, ZHANG, Shi Lian, WANG, Yan Ling, CHEN, Wei, LI, Ming, YANG, Xiao Guang, PIAO, Jian Hua
Format: Article
Language:English
Subjects:
Adult
Basal energy expenditure
Basal Metabolism
Calorimetry - methods
China
Chinese healthy adults
Female
Humans
Indirect calorimetry
Male
Predictive equations
Young Adult
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Summary:This study aimed to measure the basal energy expenditure (BEE) of Chinese healthy adults and establish an accurate predictive equation for this population. In total, 470 Chinese healthy adults had their BEE measured using the Cosmed K4b2 portable metabolic system. Multiple linear regression analysis was applied to develop new optimal equations for predicting BEE. The bias, accuracy rate, concordance correlation coefficient (CCC), and root mean square error (RMSE) were used to evaluate the accuracy of the predictive equations. There was a significant difference in BEE between males and females, with 5,954 kJ/d and 5,089 kJ/d, respectively. People living in rural areas expended significantly higher BEE (5,885 kJ/d) than those in urban areas (5,279 kJ/d). Previous equations developed by Henry, Schofield, Harris-Benedict (H-B), and Liu overestimated the BEE of Chinese healthy adults. The new equations derived from the present study displayed the smallest average bias and RMSE from the measured basal energy expenditure (mBEE). The CCC of the new equations was higher than other predictive equations, but it was lower than 0.8. There was no significant difference in the accuracy rate among all predictive equations. Sex and regional differences in BEE were observed in Chinese healthy adults. Neither the widely used previous predictive equations nor the one derived in the present study were accurate enough for estimating the BEE of Chinese healthy adults. Further study is required to develop more accurate equations for predicting the BEE of Chinese healthy adults aged between 20–45 years.
ISSN:0895-3988
2214-0190
DOI:10.3967/bes2020.075