摘要
【目的】 了解儿童青少年时期骨量发育状况及特点。 【方法】 采用单光子骨密度仪检测了 161名健康 9～ 2 0岁儿童青少年桡骨骨矿含量 (BMC值 )和骨密度 (BMD值 )。 【结果】 男、女生骨量发育水平与年龄正相关 ,男生骨量发育在 9～ 2 0岁期间呈显著持续增长 ,女生骨量增长则在 16岁后出现减慢趋势 ;骨量发育与性发育关系密切 ,男、女生在 17岁以后骨量水平已达峰值骨量 (PBM) 80 %以上 ;体重对桡骨骨量水平作用不显著 ,青春期第三期(SMR3)以前骨量发育与线性生长关系密切。 【结论】 整个性发育时期 ,男、女生骨量发育表现出不同特点 ,此期可积累PBM2 6%～ 39% ,是骨量发育的关键时期 ;达到SMR3以前是一“身高关键期” 。
Objective This cross sectional study was conductedto determine the rate of skeletal growth at distal radial and the relation to age,puberty and linear growth in school children aged 9～20 years old. Methods The bone masses of the 161 healthy 9～20 year old children and adolescents were assessed by single photon absorptiometer(SPA). Results Positive correlation between bone mass andage was observed in school children.The values of bone mass in boy group were increasing substantially between 9～20yr,whereas a dramatic reduction of the values in girls was observed after 16yr of age.The puberty was important for bone mass growth.During postpubescence,bone mass amounts to more than 80% of the mean values in adults.There was no significant effect of weight on radial bone mass,whereas the linear growth was positively related to bone mass in the SMR 1 and SMR 2 stages. Conclusions During puberty,major difference was observed in bone mass growth between boys and girls.Bone mass accumulated during adolescence accounts for 26%～39% of that recorded as PBM in adults.This suggeststhat it is important to begin primary osteoporosis prevention during childhood and adolescence.
出处
《中国儿童保健杂志》
CAS
2001年第4期230-233,共4页
Chinese Journal of Child Health Care
基金
重庆市科学技术委员会资助课题 项目编号NO 1 999- 33
关键词
骨量发育
儿童
青少年
Bone mass accumulation
Adolescents
