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目的 研究兰州市中小学生的生长发育情况 ,探索兰州地区 41年来中小学生生长发育动态规律。 方法 根据全国学生体质健康状况调研资料 ,以 195 9年资料为基准 ,分析 1985、1995和 2 0 0 0年中小学生形态发育水平和发育速度。 结果 随年代的增长 ,兰州市中小学生形态发育水平明显提高 ,男生身高、体重和胸围的年增长率逐渐增大 ,而女生表现不明显 ,男生各形态发育指标增长高峰年龄为 11～ 13岁 ,女生为 10～ 12岁。 结论 兰州市中小学生生长发育的长期趋势明显。经济状况好转和营养等生活条件改善对促进生长发育的作用明显。
Objective To study the growth and development of primary and secondary school students in Lanzhou and to explore the dynamic laws of growth and development of primary and secondary school students in Lanzhou over the past 41 years. Methods According to the survey data of physical health condition of students in our country, based on the data of 195 years, the morphological development level and speed of primary and secondary school students in 1985, 1995 and 2000 were analyzed. Results With the growth of age, the level of morphological development of primary and secondary school students in Lanzhou was significantly increased. The annual growth rate of height, weight and chest circumference of boys was gradually increased, while the performance of girls was not obvious. The peak age of growth of male students was 11-13 years old, Girls for 10 to 12 years old. Conclusion The long-term trend of primary and secondary school students’ growth and development in Lanzhou is obvious. Improved economic conditions and improved living conditions such as nutrition have a significant effect on promoting growth and development.