摘要:
了解银川市儿童青少年骨密度及骨矿含量,为促进儿童青少年骨骼发育及预防骨质疏松提供科学依据.方法 采用现况研究,运用分层整群抽样方法,在银川市抽取1 614名7~18岁儿童青少年进行问卷调查、体格测量和骨密度及骨矿物质含量测量.结果 被试平均全身骨密度为(0.89±0.12) g/cm2,平均全身骨矿含量为(1 548.40±.477.04)g.随着年龄的增加,儿童青少年骨密度和骨矿含量水平均呈上升趋势.男女骨密度和骨矿含量随年龄的变化曲线均出现了“2次交叉”,骨密度的第1次交叉在11岁,第2次在15岁;骨矿含量的第1次交叉在10岁,第2次在14岁.且骨密度和骨矿含量的第1次交叉前和第2次交叉后男生均高于女生,差异均有统计学意义(P值均<0.05).回族和汉族儿童青少年骨密度和骨矿含量水平差异均无统计学意义(￡值分别为-1.876,-1,838,P值均>0.05).结论 银川地区儿童青少年骨密度和骨矿含量随年龄增长而增加并受性别影响.应对儿童青少年定期进行骨密度和骨矿物含量的测量,以及早预防骨质疏松的发生.
关键词:
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骨密度 /
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矿物质 /
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生长和发育 /
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青少年
Abstract:
Objective To explore the change of bone mineral density and changing tendency of bone mineral content among children and adolescents,and to provide a scientific basis for the promotion of healthy bone development among children and adolescents in Yinchuan.Methods Present situation research and stratified cluster sampling method were used to select 1 614 children and adolescents aged 7-18 years from Yinchuan.All of them were investigated with questionnaire,physical measurement and DXA measurement.Results The average BMD was (0.89±0.12)g/cm2 and the BMC was (1 548.40±477.04)g.With the growing of age,the levels of BMD and BMC of both boys and girls were on the rise.The BMD and BMC between boys and girls demonstrated "twice intersections" during growth period.The first crossover of BMD was found at the age of 11,then the second one was at 15 years old.The first crossover of BMC was found at the age of 10,and the second one was at the age of 14.The BMD and BMC of boys were higher than girls before the first crossover and after the second cross(P<0.05).There was no statistical difference in the level of BMD and BMC between Han ethic group and Hui ethic group (t =-1.876,-1.838,P>0.05).Conclusion The BMD and BMC of children and adolescents in Yinchuan increased with age and were correlated with gender.It is suggested that the BMD and BMC should be measured periodically to prevent the occurrence of osteoporosis among children and adolescents.
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