肥胖男童骨矿物质含量及瘦体重的研究  

Research of Bone Mineral Content and Lean Mass in Male Obese Children.

作　　者：姜梅[1] 黄玉春[1] 华天懿[1] 赵淑霞[1] 

机构地区：[1]中国医科大学第二临床医院,辽宁沈阳110003

出　　处：《中国儿童保健杂志》2001年第3期165-167,共3页Chinese Journal of Child Health Care

摘　　要：【目的】　了解以体脂含量增加为特点的肥胖儿童骨矿物质含量、骨密度及瘦体重有何变化。　【方法】　应用体块指数 (BMI)诊断的肥胖组及对年龄、身高进行一一配对的正常组儿童各 17例 ,年龄 7～ 13岁 ,测定其骨矿物质含量 (BMC)、骨密度 (BMD)及瘦体重 (LM) ,观察二组间的差异 ,再用体脂含量百分比 (F % )来重新诊断这 3 4名儿童 ,观察肥胖组与对照组间上述指标的差异 ,并应用多因素分析肥胖与骨矿物质含量之间的关系。　【结果】　应用BMI为诊断标准时肥胖组与对照组间的BMC、BMD、LM有显著差异。改用F %为诊断标准后 ,肥胖儿童与正常儿童间的BMC、BMD差别消失 ,LM之间的差别也减小 ,多因素分析结果 :体脂含量、肥胖与BMC无关。　【结论】　若以体脂含量增加来定义肥胖儿童 ,其骨矿物质含量、骨密度与正常儿童相比无差别 ,瘦体重差别也不大 。Objective To assess and compare bone mineral content(BMC), bone mineral density(BMD)and lean mass(LM) in normal children and obese children who have excessive fat. Methods In a case control study,17 male obese children aged 7～13,diagnosed by body mass index(BMI)were recruited,17 healthy male children mached for age and height were enrolled as control.Total body BMC,total body BMD and total LM were measured by dual X ray absorptiometry. The results were compared between the two groups. Then, obesity were rediagnosed by body fat percent(F%) in these 34 children, comparation was done again. Multiple linear regression analysis was used to access the influence of age, height, body composition variables and obesity on the dependent variable BMC. Results When BMI was used to diagnose obesity, there was significant differences in BMC,BMD and LM between two groups. However, when F% was used to assess obesity, no significant differences were showed. Multiple linear regression analysis showed fat mass and obesity had no influence on BMC. Conclusions When obesity is defined as a condition of excessive fat mass, the BMC, BMD and LM have no significant differences between obese children and healthy ones, excessive fat accumulation has no influence on BMC.

关 键 词：肥胖症 儿童 骨矿物质含量 体脂含量 瘦体形 体重 

分 类 号：R151.1[医药卫生—营养与食品卫生学] R725.892[医药卫生—公共卫生与预防医学]