摘要
目的 观察 10～ 12岁女孩骨密度 (BMD)的变化。方法 对 375例健康女孩行全身扫描和左前臂扫描 ,按首次 (10岁 )平均体重指数 (BMI)分组为超重组 (BMMI >19.6 )、正常组 (BMI =14 2～ 19 6 )、偏轻组 (BMI<14 2 )。 1年和 2年后 ,利用同台双能X线骨密度仪再次扫描 ,连续 3年追踪观察该年龄段女孩每年BMD的变化。结果 全身各部位的BMD值和全身总的骨矿含量(BMC)值第 2年明显高于第 1年 (P <0 0 1～ 0 0 0 1)。第 3年 (12岁 )与第 2年 (11岁 )相比 :仅前臂远端 1/ 10处BMD值有明显增加 (P <0 0 0 1) ,前臂远端 1/ 3处BMD值和全身总的BMD值无增加 ,且全身总的BMD值略有下降 (P >0 0 5 ) ;但全身总的BMC值有明显增加 (P <0 0 0 1)。BMD、BMC值均以超重组最高 ,正常组次之 ,偏轻组最低。结论 青春期女孩不同部位的BMD值年增长率快慢不一 。
Objective\ To observe the change of bone mineral density (BMD) in Beijing girls aged 10 12 years. Methods\ 375 healthy girls undergoing whole body and left forearm scanning for BMD were divided into three groups according to the body mass index of the first measurement; overweight group (BMI>19.6),normal group (BMI=14.2-19.6) and underweight group (BMI<14.2).The second and the third measurement were done by the same dual energy X\|ray densitometer after one and two years. Results\ The value of second measurements were higher than those of first measurements in BMD of the different sites and in bone mineral content (BMC) of total body ( P <0.01-0.001). Compared with the second measurement (11 years), the third (12 years) measurement results showed that BMD of distal 1/10 left forearm increased significantly with age ( P<0.001) ,BMD in 1/3 of left forearm and BMD of total body were not significantly different,but BMD of total body declined slightly ( P>0.05 ).However,BMC of total body in third measurement was higher than that in the second measurement ( P< 0.001).BMD and BMC were highest in the overweight group,the second in the normal group, and lowest in the underweight group. Conclusion\ BMD of different sites are different in annual growths rate in pubertal girls,but BMC of total body always increase with their age.
出处
《中国骨质疏松杂志》
CAS
CSCD
2002年第2期123-125,共3页
Chinese Journal of Osteoporosis
关键词
北京
骨密度
骨矿含量
女孩
体重指数
骨质疏松
Bone mineral density
\ Bone mineral content
\ Girls
\ Body mass index
