摘要
[目的]研究3～10岁儿童身高、体重指数(BMI)、年龄对全身及各部位骨密度(BMD)的影响。[方法]选择245名3～10岁儿童,按照年龄将其分为3～6岁组及7～10岁组;每一组按身高10cm为1组,分为3组;按照BMI不同,分为偏瘦组、正常组和超重组,BMI﹤15为偏瘦,15～18为正常,﹥18为超重。测量全身及头部、上肢、下肢、躯干、肋骨、骨盆以及脊柱的骨密度,比较其与身高、BMI及年龄之间的关系。[结果](1)2个年龄组儿童全身及各部位骨密度比较,随着年龄的增高,骨密度增加迅速,与年龄呈正相关(P=0),差异有显著性。(2)2个年龄组儿童的BMD均随身高的增加有不同程度的增高,但均无统计学意义(P﹥0.05)。(3)2个年龄组儿童的BMD均随着BMI的增加有不同程度的增高,但P﹥0.05,均无统计学意义。[结论]儿童时期的骨密度随年龄增长而增加迅速,而同一年龄组儿童骨密度相似,与身高及体重关系不大。
[Objective]To explore the influence of age,height,and body mass index（BMI） on average bone mineral density（BMD） as well as BMD at various bone points in children at the age of 3 to 10 years.[Methods]A total of 245 children at the age of 3 to 10 years were divided into two groups：one group included children at the age of 3 to 6 years,and another at the age of 7 to 10 years.Each group was divided into three levels according to their height at every 10cm;according to different BMI,each group was classified into three categories：ectomorphs（BMI﹤15） ,mesomorph（BMI=15-18） ,mesomorphs（BMI﹥18） .The BMD of the whole body,forehead,upper limb,lower limb,torso,rib pelvis as well as spinal column were measured to investigate its association with height and BMI.[Results]（1） The average BMD and BMD at various bone points in the group at the age of 7 to10 showed significantly higher than that of another group（P﹤0.05） ,which showed positive correlation with age;Within both age groups the BMD also revealed positively correlated with height and BMI,while BMD did not revealed significant difference with height or BMI（P﹥0.05） .[Conclusion]During childhood,the BMD significantly increases with age.The BMD of children is similar for the same age stage,but which has little association with height and BMI.
出处
《现代预防医学》
CAS
北大核心
2007年第24期4690-4691,4694,共3页
Modern Preventive Medicine
关键词
儿童
骨密度
身高
体重指数
年龄
Children
Bone mineral density
Height
Body mass index
Age
