Correlation Study Between Body Composition and Vitamin D Levels in School-Age Children
LI Songting, ZHAO Sha, JIANG Yaohui, et al
Children's Health Center,the Affiliated Children's Hospital of Xiangya School of Medicine,Central South University(Hunan Children's Hospital),Changsha Hunan 410007
Abstract：【Objective】 To investigate the correlation between body composition indices and vitamin D levels in school-age children. 【Methods】 A total of 440 school-age children aged 7-12 years who visited the outpatient department of Child Health Care in Hunan Children's Hospital from March to September 2020 were enrolled. According to their vitamin D levels, the children with vitamin D deficiency or insufficiency were assigned to the abnormal vitamin D group (n=171), and those with sufficient vitamin D were assigned to the normal vitamin D group (n=269). Bioelectrical impedance analysis was used to measure body composition indices including body fat mass (BF), protein, mineral salts, total body water, skeletal muscle mass (SMM), visceral fat area (VFA), waist-to-hip ratio (WHR), and body fat percentage (BFP). Pearson correlation coefficient was used to analyze the correlation between body composition indices and serum 25-hydroxyvitamin D [25-(OH)D] levels, and logistic regression analysis was performed to evaluate the effects of different body composition indices on vitamin D nutritional status. 【Results】 The levels of BF, protein, mineral salts, total body water, SMM and VFA in the normal vitamin D group were significantly lower than those in the abnormal vitamin D group (P<0.05). Pearson correlation analysis showed that BF, protein, mineral salts, total body water, SMM, VFA, WHR and BFP were all negatively correlated with vitamin D levels, with statistically significant differences (P<0.05). Multivariate logistic regression analysis revealed that the regression coefficient of BF was 0.172, with an odds ratio (OR) of 1.187 [95% confidence interval(CI):1.004, 1.404] (P<0.05); the regression coefficient of WHR was 6.365, with an OR of 581.434 (95%CI: 12.150, 27 824.271) (P<0.05). 【Conclusion】 Body composition indices are correlated with vitamin D levels in school-age children. Among these indices, body fat mass and waist-to-hip ratio are predictive variables for abnormal vitamin D status.
李颂婷, 赵莎, 蒋耀辉, 刘康香, 钟燕. 体成分指标与学龄儿童维生素D水平的相关性研究[J]. 医学临床研究, 2025, 42(12): 2025-2027.
LI Songting, ZHAO Sha, JIANG Yaohui, et al. Correlation Study Between Body Composition and Vitamin D Levels in School-Age Children. JOURNAL OF CLINICAL RESEARCH, 2025, 42(12): 2025-2027.
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2025, Vol. 42 
