Characteristics of Body Composition Estimated by Air-Displacement Plethysmography in Chinese Preschool Children.

To describe the characteristics of body composition by air-displacement plethysmography (ADP) among Chinese preschool children. Preschool children were recruited from three kindergartens. Adiposity indices were evaluated using the ADP method. BMI, fat mass index (FMI), fat-free mass index (FFMI) and waist-to-height ratio (WHtR) were calculated. Overweight and obesity were diagnosed using the WHO reference. Analyses were executed by SPSS and MedCalc software. Smoothed curves were constructed using the lambda-mu-sigma (LMS) method. This study evaluated the growth trend for body composition of ADP-based body fat indices based on a relatively large sample of preschool children, the first ever reported in China. A total of 1,011 children aged 3-5 years comprised our study population. BMI and FFMI increased with age, but the slope (P = 0.710) and y intercept (P = 0.132) in the BMI trend analysis demonstrated no differences between boys and girls. For the FFMI trend lines, the slope was significantly higher for boys than for girls (P = 0.013). The percentage of fat mass (FM%), FMI, and WHtR were negatively correlated with age for both sexes, except for FMI in girls (P = 0.094). The 95% CI regression lines for FM% according to different weight statuses intersected. ADP is applicable to estimating body composition among Chinese preschool children. Misclassifications might occur when overweight/obese status is defined based on surrogate indices. Copyright © 2022 Chen, Wang, Liu, Huang, Hou, Liao, Zhang, Liu, Xie and Tai.

Citation

Fangfang Chen, Jing Wang, Junting Liu, Guimin Huang, Dongqing Hou, Zijun Liao, Ting Zhang, Gongshu Liu, Xianghui Xie, Jun Tai. Characteristics of Body Composition Estimated by Air-Displacement Plethysmography in Chinese Preschool Children. Frontiers in public health. 2022;10:926819

Mesh Tags

PMID: 35719642

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