Analysis for body composition status and development pattern of children and adolescents aged 6-17 years in Guangzhou
10.3760/cma.j.cn101070-20200928-01570
- VernacularTitle:广州市6~17岁儿童青少年体成分现状及发育规律分析
- Author:
Chao CHEN
1
;
Lun YANG
;
Weihao HUANG
;
Shuang LU
;
Guangchuan ZHANG
;
Wanwen YAO
;
Yijin ZHENG
;
Yi YANG
;
Li LIU
Author Information
1. 广东药科大学公共卫生学院，广州 510310
- Keywords:
Fat-free mass;
Fat mass;
Body composition;
Children and adolescents;
Hattori chart
- From:
Chinese Journal of Applied Clinical Pediatrics
2021;36(24):1887-1890
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the current status of body composition and development patterns of children and adolescents aged 6-17 years in Guangzhou.Methods:This was a cross-sectional study involving 8 169 school students from 3 elementary schools and 3 middle schools in Guangzhou from March to December 2019.The fat-free mass (FFM) and fat mass (FM) were measured by the bioelectrical impedance analysis.The fat-free mass index (FFMI) and fat mass index (FMI) were calculated via the height standardization. T test was used to compare quantitative variables between groups.The growth pattern of body composition was described using the Hattori chart. Results:A total of 4 431 boys (54.24%) and 3 738 girls (45.76%) were involved in this study.FFM and FM both increased with age between boys and girls.Except for boys aged 11 years, FFM in boys were significantly higher than that in girls with the same age (all P<0.05). In the age of 7-10 years, FM in boys were significantly higher than that in girls with the same age, while it was significantly higher in girls aged 12 years and older than that of boys at the same age (all P<0.05). The Hattori chart showed that the difference in body composition between genders occurred after 11 years old.In contrast to girls, increases in the weight and body mass index (BMI) in boys were mainly attributed to the FFM development. Conclusions:The development of FFM and FM in children and adolescents varies with age, accompanied with the gender-specific features.FFM in boys is higher than that of girls at the same age.The weight gain in boys is mainly attributed to the development of fat-free tissues, and thus the utility of BMI may lead to the overestimation of obesity.
