Status and influencing factors of prepubertal bone mineral density of Han children in rural areas of eastern Henan Province

CHEN Huiyu; LIANG Zhidong; MA Pan; LIANG Jiazhi; SUN Yanyan

doi:10.11852/zgetbjzz2024-0503

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Chinese Journal of Child Health Care ›› 2025, Vol. 33 ›› Issue (2) : 221-226. DOI: 10.11852/zgetbjzz2024-0503

Status and influencing factors of prepubertal bone mineral density of Han children in rural areas of eastern Henan Province

CHEN Huiyu¹, LIANG Zhidong¹, MA Pan², LIANG Jiazhi³, SUN Yanyan¹

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Abstract

Objective To investigate the current status of bone density in prepubescent Han children in rural areas of East Henan and to explore the influencing factors, in order to provide reference for the development of physical health of rural children. Methods From July to September 2023, 318 prepubescent Han children from 12 primary schools in rural East Henan were randomly selected as subjects by stratified sampling. Their whole-body bone mineral density (BMD) (excluding the head) and daily physical activity levels were measured. Information was collected by means of questionnaire survey and telephone interview. Results Significant differences in bone density were observed among subjects based on age, body mass index (BMI), the highest educational attainment of one parent, family support for sports, whether they were an only child, and whether they were left-behind children (P<0.05). Correlation analysis revealed a significant positive correlation between BMD and moderate-to-vigorous physical activity time (r=0.890, P=0.033). Multivariate linear regression analysis indicated that age, BMI, the highest educational attainment of one parent, family support for sports, being an only child, being a left-behind child, and moderate-to-vigorous physical activity time were all factors affecting bone density (P <0.05). The explanatory power from greatest to least was being a left-behind child (β=1.05), moderate-to-vigorous physical activity time (β=0.91), being an only child (β=-0.74), the highest education level of one parent (β=-0.52),BMI (β=-0.51), age (β=0.39) and family support for sports (β=-0.25). Conclusion Cultivating health literacy among rural residents, caring for left-behind children, enhancing support for physical activities among rural children, and appropriately extending the duration of moderate-to-vigorous physical activity are important approaches to improving BMD of prepubescent children in rural areas.

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rural area of eastern Henan province / Han children / prepuberty / bone mineral density

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CHEN Huiyu, LIANG Zhidong, MA Pan, LIANG Jiazhi, SUN Yanyan. Status and influencing factors of prepubertal bone mineral density of Han children in rural areas of eastern Henan Province[J]. Chinese Journal of Child Health Care. 2025, 33(2): 221-226 https://doi.org/10.11852/zgetbjzz2024-0503

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