Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers

Abstract Background Physical fitness and body composition in preschool years are crucial for health. However, the association between them in preschool children is not yet fully understood. This research examines the link between physical fitness and body composition in Chinese children aged 3 to 6...

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Main Authors: Jin Guo, Zhaoxu Lu, Yihua Bao, Jiahui Chang, Haowen Zhang, Fang Wang, Wei Chen, Jingyu Shi, Man Wang, Jingjing Liu, Chuanhe Liu, Shan Wang, Jian Wu, Hongyan Guan, Ting Zhang
Format: Article
Language:English
Published: BMC 2025-07-01
Series:BMC Public Health
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Online Access:https://doi.org/10.1186/s12889-025-23406-8
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author Jin Guo
Zhaoxu Lu
Yihua Bao
Jiahui Chang
Haowen Zhang
Fang Wang
Wei Chen
Jingyu Shi
Man Wang
Jingjing Liu
Chuanhe Liu
Shan Wang
Jian Wu
Hongyan Guan
Ting Zhang
author_facet Jin Guo
Zhaoxu Lu
Yihua Bao
Jiahui Chang
Haowen Zhang
Fang Wang
Wei Chen
Jingyu Shi
Man Wang
Jingjing Liu
Chuanhe Liu
Shan Wang
Jian Wu
Hongyan Guan
Ting Zhang
author_sort Jin Guo
collection DOAJ
description Abstract Background Physical fitness and body composition in preschool years are crucial for health. However, the association between them in preschool children is not yet fully understood. This research examines the link between physical fitness and body composition in Chinese children aged 3 to 6 years. Methods The cross-sectional study included 472 preschool children. Physical fitness was evaluated using the PREFIT battery which involves five dimensions: cardiorespiratory fitness (PREFIT 20m shuttle run), upper/lower limb strength (handgrip/standing long jump), speed-agility (4 × 10m shuttle run), and balance (one-leg stance). Body composition was determined through bioelectrical impedance analysis. Results Partial correlation analyses indicated that elevated Physical Fitness T-scores (PHT), as well as increased upper and lower limb strength, speed-agility, and cardiorespiratory fitness, correlated with reduced fat mass indices and enhanced muscle mass indices. Higher bone mineral content index is associated with improved lower-limb strength and speed-agility. There was no notable correlation between balance performance and body composition. The results also revealed that both fat and muscle mass indices are dependent on changes of physical fitness ability except for balance among preschool children. Multiple linear regression analysis also identified significant positive associations between muscle mass indices and physical fitness parameters (handgrip, standing long jump, 4 × 10m shuttle run, and PREFIT 20m shuttle run), while significant negative associations were observed between these fitness measures and fat mass indices. Conclusions The findings indicate a significant associations between physical fitness and both fat and muscle composition in preschoolers, emphasizing the importance of physical fitness development and regular monitoring into health initiatives for this age group.
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spelling doaj-art-b44be5ccf6c74119a2869bee891ea8302025-08-20T04:01:43ZengBMCBMC Public Health1471-24582025-07-012511910.1186/s12889-025-23406-8Physical fitness is associated with fat mass and muscle mass in Chinese preschoolersJin Guo0Zhaoxu Lu1Yihua Bao2Jiahui Chang3Haowen Zhang4Fang Wang5Wei Chen6Jingyu Shi7Man Wang8Jingjing Liu9Chuanhe Liu10Shan Wang11Jian Wu12Hongyan Guan13Ting Zhang14Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsSchool of Kinesiology and Health, Capital University of Physical Education and SportsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsDepartment of Allergy, Capital Center for Children‘s health, Capital Medical UniversityChunjiang KindergartenChunjiang KindergartenShougang Preschool Education CenterDepartment of Allergy, Capital Center for Children‘s health, Capital Medical UniversityBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsSchool of Kinesiology and Health, Capital University of Physical Education and SportsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of PediatricsAbstract Background Physical fitness and body composition in preschool years are crucial for health. However, the association between them in preschool children is not yet fully understood. This research examines the link between physical fitness and body composition in Chinese children aged 3 to 6 years. Methods The cross-sectional study included 472 preschool children. Physical fitness was evaluated using the PREFIT battery which involves five dimensions: cardiorespiratory fitness (PREFIT 20m shuttle run), upper/lower limb strength (handgrip/standing long jump), speed-agility (4 × 10m shuttle run), and balance (one-leg stance). Body composition was determined through bioelectrical impedance analysis. Results Partial correlation analyses indicated that elevated Physical Fitness T-scores (PHT), as well as increased upper and lower limb strength, speed-agility, and cardiorespiratory fitness, correlated with reduced fat mass indices and enhanced muscle mass indices. Higher bone mineral content index is associated with improved lower-limb strength and speed-agility. There was no notable correlation between balance performance and body composition. The results also revealed that both fat and muscle mass indices are dependent on changes of physical fitness ability except for balance among preschool children. Multiple linear regression analysis also identified significant positive associations between muscle mass indices and physical fitness parameters (handgrip, standing long jump, 4 × 10m shuttle run, and PREFIT 20m shuttle run), while significant negative associations were observed between these fitness measures and fat mass indices. Conclusions The findings indicate a significant associations between physical fitness and both fat and muscle composition in preschoolers, emphasizing the importance of physical fitness development and regular monitoring into health initiatives for this age group.https://doi.org/10.1186/s12889-025-23406-8PreschoolersPhysical fitnessBody composition
spellingShingle Jin Guo
Zhaoxu Lu
Yihua Bao
Jiahui Chang
Haowen Zhang
Fang Wang
Wei Chen
Jingyu Shi
Man Wang
Jingjing Liu
Chuanhe Liu
Shan Wang
Jian Wu
Hongyan Guan
Ting Zhang
Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
BMC Public Health
Preschoolers
Physical fitness
Body composition
title Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
title_full Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
title_fullStr Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
title_full_unstemmed Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
title_short Physical fitness is associated with fat mass and muscle mass in Chinese preschoolers
title_sort physical fitness is associated with fat mass and muscle mass in chinese preschoolers
topic Preschoolers
Physical fitness
Body composition
url https://doi.org/10.1186/s12889-025-23406-8
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