[Characteristics of fat-free mass distribution in children aged 3-17 years in China].

Q1 Medicine 中华流行病学杂志 Pub Date : 2024-11-10 DOI:10.3760/cma.j.cn112338-20240508-00249

X H Pang, Z Y Yang, P P Xu, W Cao, Q Zhang, Y Y Wang, T Xu, B W Chen, W H Zhao

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引用次数: 0

Abstract

Objective: To describe the distribution of fat-free mass (FFM) and fat-free mass index (FFMI) in children aged 3-17 years in China. Methods: Data were collected from National Nutrition and Health Systematic Survey in 0-18 years old children in China. By using multi-stage stratified randomized cluster sampling method, the project was conducted in 28 survey points in urban and rural areas in 14 provinces (autonomous regions and municipalities) in 7 regions in China from 2019 to 2021. FFM was measured using bioelectrical impedance meter. Finally, the body composition data of 70 853 children were included in the analysis. M (Q₁, Q₃) was used to describe the gender and age specific FFM and FFMI of the children in different regions. Kruskal-Wallis H rank sum test was used to compare FFM and FFMI of boys and girls in same age group, boys in different age groups, girls in different age groups, as well as boys in same age group and girls in same age group in different regions. DSCF method was used for pairwise comparisons. Results: After the age of 11 years, the difference of FFMI between boys and girls increased year by year. The FFMI was 14.2 kg/m² in boys and 13.8 kg/m² in girls at 11 years old, the difference was significant (χ²=135.86, P<0.001). The difference of FFMI between boys and girls exceed 1.0 kg/m² from 12 years old, and FFMI was 15.3 kg/m² in boys and 14.2 kg/m² in girls at 12 year old, the difference was significant (χ²=597.27, P<0.001). The FFMI was 17.5 kg/m² in boys and 14.7 kg/m² in girls at 16 years old, the difference was significant (χ²=2 543.60, P<0.001). The FFMI was higher in boys in northeast China, while the FFMI was lower in both boys and girls in northwest China. Conclusions: Gender specific difference was observed in the increase of FFMI with age. The FFMI was significantly higher in boys than in girls after 11 years old. It is necessary to pay attention to the problem of FFM in children in northeastern and northwestern China.

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[中国3-17岁儿童无脂肪质量分布特征]。

目的：了解中国3 ~ 17岁儿童无脂质量（FFM）和无脂质量指数（FFMI）的分布。方法：收集全国0 ~ 18岁儿童营养与健康系统调查数据。采用多阶段分层随机整群抽样方法，于2019 - 2021年在中国7个地区的14个省（区、市）的28个城乡调查点进行研究。采用生物电阻抗仪测定FFM。最后将70853名儿童的身体成分数据纳入分析。用M （Q1, Q3）描述不同地区儿童的性别和年龄特异性FFM和FFMI。采用Kruskal-Wallis H秩和检验比较同年龄组男生和女生、不同年龄组男生、不同年龄组女生、不同地区同龄男生和同龄女生的FFM和FFMI。两两比较采用DSCF方法。结果：11岁以后，男孩和女孩间FFMI的差异逐年增大。11岁时男生FFMI为14.2 kg/m2，女生为13.8 kg/m2，差异有统计学意义(χ2=135.86, 12岁时为P2； 12岁时男生FFMI为15.3 kg/m2，女生为14.2 kg/m2，差异有统计学意义(χ2=597.27, 16岁时男生FFMI为P2，女生FFMI为14.7 kg/m2，差异有统计学意义（χ2=2 543.60, p）结论：FFMI随年龄增加存在性别差异。11岁以后，男孩的FFMI明显高于女孩。东北、西北地区儿童FFM问题值得关注。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中华流行病学杂志 Medicine-Medicine (all)

CiteScore

5.60

自引率

0.00%

发文量

8981

期刊介绍： Chinese Journal of Epidemiology, established in 1981, is an advanced academic periodical in epidemiology and related disciplines in China, which, according to the principle of integrating theory with practice, mainly reports the major progress in epidemiological research. The columns of the journal include commentary, expert forum, original article, field investigation, disease surveillance, laboratory research, clinical epidemiology, basic theory or method and review, etc. The journal is included by more than ten major biomedical databases and index systems worldwide, such as been indexed in Scopus, PubMed/MEDLINE, PubMed Central (PMC), Europe PubMed Central, Embase, Chemical Abstract, Chinese Science and Technology Paper and Citation Database (CSTPCD), Chinese core journal essentials overview, Chinese Science Citation Database (CSCD) core database, Chinese Biological Medical Disc (CBMdisc), and Chinese Medical Citation Index (CMCI), etc. It is one of the core academic journals and carefully selected core journals in preventive and basic medicine in China.