Objective To investigate the body mass index ( BMI ), blood ionized calcium and vitamin D in preschool children of Baoding City in Hebei Province and explore the relationship among them. Methods Random sampling and double-blind method were used to collect 301 preschool children in Baoding City, and their body height, body weight, blood ionized calcium and 25-hydroxyvitamin D were measured and analyzed. Results Children of normal weight, overweight and obesity accounted for 58. 5% ( 176/301 ), 20. 9% ( 63/301 ) and 20. 6% ( 62/301 ), respectively. The level of 25-hydroxyvitamin D in obese children was 38. 53 ±5. 28 nmol/L, which was lower than that of normal children, and the difference was statistically significant ( t =2. 65, P < 0. 05 ). BMI was negatively correlated with 25-hydroxyvitamin D level in children of obesity ( r = -2.15, P<0.05), but it was not correlated with blood ionized calcium. Conclusion The BMI of preschool children of obesity is negatively correlated with serum 25-hydroxyvitamin D level.%目的 调查河北省保定市城区学龄前儿童身体质量指数变化,探讨其与离子钙和25-羟维生素D的关系.方法 采取随机抽样双盲方法,选择保定市城区幼儿园301名学龄前儿童,测量身高、体重、血离子钙和25-羟维生素D等指标并进行分析.结果 体重正常、超重和肥胖者分别占58.47%(176/301)、20.93%(63/301)和20.60%(62/301);肥胖儿童25-羟维生素D水平为38.53±5.28nmol/L,低于正常儿童(54.65±6.36nmol/L),差异有统计学意义(t=2.65,P<0.05).肥胖儿童身体质量指数与25-羟维生素D呈负相关(r=-2.15,P<0.05),身体质量指数与离子钙之间不存在相关性.结论 在学龄前肥胖儿童中,身体质量指数与25-羟维生素D呈负相关性.
展开▼
