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目的了解大连市小学生身体形态发育规律,为制定公共卫生政策和计划提供依据。方法采用追踪调查方法,对分层整群抽取的大连市933名小学生进行连续6 a体格监测。采用多水平模型,分析7～12岁学生身高、体重、BMI的变化及生长曲线。结果学生身高、体重、BMI均随年龄增长而增长。受年龄和性别的共同影响,6 a间小学男生和女生身高、体重、BMI表现出不同的生长规律,男生身高、体重、BMI的年平均生长速度(4.91 cm,0.87 kg,0.98 kg/m2),均高于女生(4.32 cm,-1.19 kg,-0.02 kg/m2)。结论大连市7～12岁小学生的生长发育符合一般规律。应该采取有效措施控制儿童青少年肥胖,尤其是男生。
Objective To understand the law of body shape development of pupils in Dalian and to provide the basis for formulating public health policies and plans. Methods By means of follow-up survey, 933 primary school students in Dalian were monitored for 6 consecutive months by physical examination. The multi-level model was used to analyze the changes of height and weight, BMI and growth curve of 7-12-year-old students. Results The height, weight and BMI of students increased with age. Under the influence of age and sex, the height and weight of boys and girls in primary school and the growth of BMI showed different growth patterns. The average height and weight of boys, average annual growth rate of BMI (4.91 cm, 0.87 kg, 0.98 kg / m2) , Higher than girls (4.32 cm, -1.19 kg, -0.02 kg / m2). Conclusion The growth and development of pupils aged 7 ~ 12 in Dalian meet the general rules. Effective measures should be taken to control obesity in children and adolescents, especially boys.