Abstract: Objective To investigate body composition and serum uric acid level in children aged 8 to 11 years, as well as the differences among different age, sex and body mass index (BMI) groups, and to analyze the correlation between serum uric acid level and various indicators of body composition. Methods From April to December 2020, 306 children aged 8 to 11 who took physical examination in Nutrition Department of Taiyuan Maternal and Child Health Hospital were selected as study subjects. Height and weight of the participants were measured, body composition and serum uric acid level were tested. Then the correlation between body composition and serum uric acid level was analyzed. Results Boys had higher BMI than girls (t=2.253, P<0.05), but there was no significant difference in other body composition indicators between boys and girls (P＞0.05). The consistency of BMI and PBF when diagnosing obesity was higher in girls (Kappa=0.642), which was lower in boys (Kappa=0.438). The consistency of BMI and PBF was highest in 9-year-old boys group (Kappa=0.669) and 11-year-old girls group (Kappa=0.761). Person correlation analysis showed that serum uric acid level was positively correlated with all indicators of body composition. BMI had the most significant correlation with blood uric acid among boys(r=0.579, P<0.001). Among girls, BMI was the highly associated with serum uric acid(r=0.706, P<0.001), followed by the body fat content(r=0.705, P<0.001).Mutivariate linear regression analysis showed that BMI had the greatest effect on the serum uric acid level among all body composition indicators for children aged 8 to 11 years(P<0.05). Conclusions The physical condition of children aged 8 to 11 years in Taiyuan is close to that of the whole country. There is a high consistency between PBF and BMI when screening for obesity in 8- to 11-year-old children. Body composition indicators are related to serum uric acid level, so it is essential to pay more attention to the prevention of early hyperuricemia for children with high BMI.

Key words: body composition, obesity, serum uric acid, body mass index, body fat percentage, children

摘要： 目的 分析8~11岁儿童体成分和尿酸的含量以及不同年龄、性别、体重指数(BMI)之间的差异,分析血尿酸与体成分各指标的相关性。方法 以2020年4—12月在太原市妇幼保健院营养科体检的306例8~11岁儿童为研究对象,检测身高、体重及体成分各项指标,并检测血清尿酸的水平,分析该年龄段儿童体成分特征及其与尿酸的相关性。结果 男童和女童体成分各指标相比,男童的BMI显著高于女童,差异具有统计学意义(t=2.253,P<0.05),其余各指标差异均无统计学意义(P>0.05);BMI和体脂百分比(PBF)在女童中判断肥胖的一致性较高(Kappa值=0.642),而在男童中的一致性较低(Kappa值=0.438);男童中9岁年龄组一致性最高(Kappa值=0.669),女童中11岁年龄组一致性最高(Kappa值=0.761);Person相关性分析显示,尿酸与体成分各指标均呈正相关,男童中,BMI与血尿酸的相关性最大(r=0.579,P<0.001);女童中,BMI(r=0.706,P<0.001)、体脂肪含量(r=0.705,P<0.001)与血尿酸的相关性最大,多重线性回归分析显示,BMI对8~11岁儿童血清尿酸影响最大(P<0.05)。结论 太原市8~11岁儿童身体状况与全国水平较为接近;体成分PBF与BMI筛查8~11岁儿童肥胖率具有较高的一致性;体成分各指标与血清尿酸水平均有相关性,对于BMI较高的儿童,应注意预防早期高尿酸血症。

关键词: 体成分, 肥胖, 血尿酸, 体重指数, 体脂百分比, 儿童