Relationship between body composition and physical condition of children and adolescents

ZHAO Bangwei; KONG Zhenxing; LI Hongjuan

doi:10.16835/j.cnki.1000-9817.2022.01.005

Volume 43 Issue 1

Jan. 2022

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ZHAO Bangwei, KONG Zhenxing, LI Hongjuan. Relationship between body composition and physical condition of children and adolescents[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2022, 43(1): 19-22. doi: 10.16835/j.cnki.1000-9817.2022.01.005

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ZHAO Bangwei, KONG Zhenxing, LI Hongjuan. Relationship between body composition and physical condition of children and adolescents[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2022, 43(1): 19-22. doi: 10.16835/j.cnki.1000-9817.2022.01.005

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Relationship between body composition and physical condition of children and adolescents

doi: 10.16835/j.cnki.1000-9817.2022.01.005

Key Laboratory of the Ministry of Education of Exercise and Physical Fitness, Beijing Sport University, Beijing (100084), China

Received Date: 2021-03-05
Rev Recd Date: 2021-05-18
Publish Date: 2022-01-25

Abstract

Abstract

Objective To investigate the correlation between fat mass percentage(FM%), fat mass index(FMI), fat-free mass index(FFMI), body mass index (BMI) and physical fitness, and to explore the potential value of body composition index in predicting physical exercise level of children and adolescents. Methods Data came from 2013 revision of National Students' Physical Health Standard of Ministry of Education in Beijing. Body composition of 4 069 children and adolescents aged 6-20 years in Beijing was measured by the BIA(inbody 230). FM, FMI, FFMI and BMI were divided into four groups by quartile method. The differences and trends of the four groups were analyzed by graphpad prism 8.0 software. Results FM% (20.03±10.39) and FMIS [(4.35±2.84)kg/m²] of oys were significantly lower than those of girls, while FFMI [(14.21±4.95)kg/m²] and BMI [(20.31±4.27)kg/m²] of boys were significantly higher than those of girls(t=-13.36, -7.66, 11.49, 8.16, P < 0.01). In boys, with the increase of FM% and FMI, the performance of 50 m, 1 000 m, standing long jump and pull-up showed a downward trend; with the increase of FFMI, the performance of 50 m, standing long jump and pull-up had an obvious upward trend. In girls, with the increase of FM% and FMI, the 50 m running time was gradually shortened, and the 800 m running time was gradually increasing; High FFMI was associated with higher performance in 50 m running, while no association was observed between FFMI and 800 m running.Four body composition indicators showed no effects on performance of sitting forward flexion and 1-minute sit-up. Conclusion FM%, FMI, FFMI and BMI have a good predictive effect on physical fitness of children and adolescents. Adolescents with higher FFMI, lower FM% and FMI have better muscle burst strength, muscle endurance, flexibility, aerobic ability and anaerobic ability, especially in boys.
- Body composition,
- Physical fitness,
- Body mass index,
- Child,
- Adolescent

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