半个世纪来江苏省丹阳县儿童生长的长期趋势

本文对江苏省丹阳县儿童1936、1956及1985年的生长发育资料进行了对比分析。观察到,半个世纪来,该县7—14岁男女儿童身高分别增长了9.3、11.4厘米,体重平均增长了3.9、4.0公斤,坐高平均增长了4.2、5.0厘米,表现出明显的生长长期加速趋势。1956—1985年阶段的身高每10年增长值显著大于1936—1956年阶段(P<0.01),而体重每10年增长值在两个阶段间无明显差异(P>0.05)。以1985年实测体重均数与估计体重均数比较,女童明显地表现出体重增长相对不足,体型向细长型发展。本文还将丹阳县儿童生长长期趋势与南京市、上海市及日本国同时期、同年龄儿童的生长长期趋势进行了比较。

SECULAR GROWTH TREND OF CHILDREN IN DANYANG COUNTY, JIANGSU PROVINCE

Growth of children of Danyang County, Jiangsu Province during 1936-1985 was compared. A notable secular growth trend of children during the last half century was observed. The mean heights of Danyang's boys and girls aged 7-14 increased 9.3 and 11.4 cm, respectively, mean weights increased 3.9 and 4.0 kg, and mean sitting heights increased 4.2 and 5.0 cm.The height increments of boys and girls in centimeters per decade in the interval of 1956-1985 were significantly greater than those in the interval of 1936-1956 (P<0.01), and the weight increments of the interval were not remarkably different (P>0.05).Comparison of the measured value and estimated value of mean weight in each ages showed that the girls' weight increment was proportional to the height increment, and the body pattern trended to. be slender.Secular growth trend of Danyang's children was compared with that of same aged children of Nanjing, Shanghai in China and that children in Japan at same period.