大连学生体质发育的研究

为了解大连地区城乡学生生长发育状况及其规律，采用人体测量学方法，调查测量了大连地区7—18岁3834（城市男630，城市女645，乡村男1285，乡村女1274）名汉族学生23项形态指标，并利用以往资料，研讨了大连学生主要形态指标的生长发育规律、生长发育趋势、性差和地区差别。结果表明：1生长发育特点：大连学生测量项目的均值随年龄的增长而增加，生长曲线呈上升趋势并且男女有交叉现象。2性差：大连学生各测量项目均有明显的性差，除女生青春期（10—12岁）外，在其他年龄组均为男生大于女生。3生长的长期变化：大连7—17岁男女学生26年来身高、体重、胸围有较大幅度的增长，其每10年平均增长值分别为2.52cm和1.92cm、4.05kg和2.39kg、1.77cm和1.38cm。4城乡差：大连男女学生身高、体重、胸围仍存在城乡差别。

STUDY ON PHYSICAL DEVELOPMENT FOR STUDENTS IN DALIAN

The purpose of this study is to know the status and rule of growth and development in Dalian urban and rural students. According to the anthropometric method, we measured twenty-three items of 3 834 (boys of urban 630, girls of urban 645;boys of rural 1285, girls of rural 1274) Han nationality students aged 7—18 who live in area of Dalian. Based on the data published before, we researched the rule and trend of growth and development, the sexual differences and the regional differences of chief morphological indices of these students.The results showed as follows: 1.Characteristics of growth and development: With age increase, the average value of measuring items gradually increased, the growth curves of boys and girls appeared rising tendency and were crossed each other.2. Sex differences: there were obvious sex differences in all the measuring items in Dalian students. Among all the age groups the data showed that values of boys were larger than those of girls appeared notably significant differences except the group of female puberty (aged 10—12). 3.Secular growth change: during 26 years, the stature, body weight, girth of chest of boys and girls in Dalian aged 7—17 increased with a large extent, the average increased values every 10 years were 2.52 cm and 1.92 cm, 4.05 kg and 2.93 kg, 1.77 cm and 1.38 cm, respectively. 4.Differences between urban and ru-ral: differences remained between Dalian urban and rural boys and girls in stature, body weight and girth of chest.