中文摘要：

目的分析我国城市学生1985-2005年体格发育变化情况,为采取针对性干预措施提供依据。方法调整全国体质调研抽样框架,组建沿海大城市、其他省会市、中小城市3类群体,比较1985-2005年7-18岁各性别-年龄组身高和BM I均值增长趋势。结果三群体均正向迅猛增长。7岁身高均值男生2005年比1985年分别增长4.2,5.0和4.8 cm,女生增长4.3,5.0和4.0 cm;青春期提前;成年身高增速男生为1.5,1.1和1.3 cm/10 a,女生为1.1,1.0和0.8 cm/10 a。结论城市学生全面进入＂完全性生长长期趋势＂。应尽力减少不同群体间体格发育差异,防治伴随生长长期变化而出现的超重/肥胖蔓延趋势。

英文摘要：

Objective To observe the growth changes of the Chinese urban students from 1985 to 2005 and to provide evidence for the intervention measurements.Methods Based on the re-organization of the sampling structure,of the Chinese National Survey on Students＇ Physical Fitness and Constitution,three new groups named the ＂coast metropolis＂,the ＂other provincial capitals＂ and the ＂moderate/small cities＂ were set up.Means of height and BMI in each of the sex-age groups for all those aged 7 through 18 years were calculated and compared between 1985 and 2005,in order to show the growth changes in this period.Results An overall positive and swift trend was found in all these three populations.The increments of 7-year-old＇s height were 4.2,5.0 and 4.8 cm for male groups,and 4.3,5.0 and 4.0 cm for female groups,respectively.Strong evidence showed the advancement of puberty.For the means of adult height,the increasing rates were 1.5,1.1 and 1.3 cm/decade and 1.1,1.0 and 0.8 cm/decade,for the three populations of males and females respectively.Conclusion The physical growth of the Chinese urban students has overall entered the complete secular growth trend.More effective intervention measures should be taken to reduce the imbalance of growth levels among populations,and to prevent the swift epidemic of childhood overweight and obesity.