生物电阻抗法与双能X线吸收法测定中国6~17岁儿童体成分的一致性分析  

Consistency between bioelectrical impedance analysis and dual-energy X-ray absorptiometry in body composition measurement in children aged 6-17 years in China

作　　者：罗瑞鹤 沈丽萍 张倩 曹薇 王宏亮 徐培培 杨振宇 甘倩 庞学红 徐韬 陈博文[4] 王玉英 赵文华 Luo Ruihe;Shen Liping;Zhang Qian;Cao Wei;Wang Hongliang;Xu Peipei;Yang Zhenyu;Gan Qian;Pang Xuehong;Xu Tao;Chen Bowen;Wang Yuying;Zhao Wenhua(National Institute for Nutrition and Health,Chinese Center for Disease Control and Prevention/Key Laboratory of Public Nutrition and Health,National Health Commission of the People's Republic of China/Key Laboratory of Human Milk Science,Chinese Center for Disease Control and Prevention,Beijing100050,China;Division of Health Risk Factor Monitoring and Control,Shanghai Municipal Center for Disease Control and Prevention,Shanghai200336,China;National Center for Women and Children's Health,National Health Commission,Beijing100081,China;Capital Institute of Pediatrics,Beijing100020,China)

机构地区：[1]中国疾病预防控制中心营养与健康所/国家卫生健康委公共营养与健康重点实验室/中国疾病预防控制中心母乳科学研究重点实验室,北京100050 [2]上海市疾病预防控制中心健康危害因素监测与控制所,上海200336 [3]国家卫生健康委妇幼健康中心,北京100081 [4]首都儿科研究所,北京100020

出　　处：《中华流行病学杂志》2024年第11期1507-1512,共6页Chinese Journal of Epidemiology

基　　金：科技基础资源调查专项(2017FY101100)。

摘　　要：目的比较生物电阻抗法(BIA)与双能X线吸收法(DXA)测定6~17岁儿童体成分的一致性。方法利用便携式生物电阻抗仪和双能X线吸收仪同时测量1161名儿童的去脂体重、体脂质量和体脂百分比,t检验或符号秩检验比较2种方法测量儿童去脂体重、体脂质量和体脂百分比的差异,采用Spearman相关系数(r值)和Bland-Altman分析评价2种方法测量结果的相关性和一致性。结果BIA与DXA测定6~17岁儿童体成分为正相关(体脂质量r=0.95,去脂体重r=0.98,体脂百分比r=0.86,均P<0.05)。与DXA相比,BIA低估了儿童体脂质量[差值的均值为-3.15 kg,SD为2.35 kg,95%一致性界限(LoA)为-7.74~1.45 kg]和体脂百分比(差值的均值为-8.45%,SD为4.63%,95%LoA为-17.53%~0.64%)。结论BIA与DXA测定6~17岁儿童体成分结果呈高度正相关,在测量6~17岁儿童体脂质量、去脂体重等体成分指标中具有应用价值。Objective To evaluate the consistency between bioelectrical impedance analysis(BIA)and dual-energy X-ray absorptiometry(DXA)in the measurement of body composition in children aged 6-17 years in China.Methods Fat-free mass,fat mass and fat mass percentage were measured by both BIA and DXA in 1161 children.t-test or Wilcoxon paired test was used to evaluate the different outcome of the two methods.The correlation and consistency between the methods were evaluated by Spearman correlation coefficients(r)and Bland-Altman analysis.Results Body compositions measured by BIA was positively correlated with those measured by DXA(fat mass r=0.95,fat-free mass r=0.98,fat mass percentage r=0.86,all P<0.05).Comparing with DXA,BIA underestimate children's fat mass[the mean difference is-3.15 kg,and the SD is 2.35 kg,95%limits of agreement(LoA):-7.74-1.45 kg]and fat mass percentage(the mean difference is-8.45%,and the SD is 4.63%,95%LoA:-17.53%-0.64%).Conclusions Body compositions measured by BIA was highly positively correlated with those measured by DXA.BIA has certain application value in the measurement of body fat mass and fat-free mass of children aged 6-17 years.

关 键 词：生物电阻抗法 双能X线吸收法 体成分 体脂质量 去脂体重 体脂百分比 

分 类 号：R179[医药卫生—妇幼卫生保健]