中国汉族儿童生长的长期趋势

SECULAR TREND OF GROWTH IN CHINESE HAN NATIONALITY CHILDREN

本文报告了中国北京、天津、济南、哈尔滨、沈阳、长春、上海、南京、杭州、武汉、广州及成都等12个城市汉族7—18岁儿童生长的长期趋势。 50年代至今,汉族儿童生长的长期趋势是明显的,30年来同年龄儿童身高每10年增长2.66(男)、2.40(女)厘米,体重每10年增长1.64(男)、1.14(女)公斤,近10年来的增长最为显著。生长突增高峰年龄大都提前1—2年。北京、上海、南京、广州、杭州等五所城市自30年代至今,生长长期趋势也是明显的,半个世纪来,每10年增长值,男童身高为1.12—2.66厘米,体重为0.56—1.29公斤,女童身高为1.42—2.67厘米,体重为0.65—1.18公斤。

This paper reported growth secular trend in Chinese Han nationality children in twelve cities, including Beijing, Tianjin, Jinan, Harbin, Shenyang, Changchun, Shanghai, Nanjing, Hangzhou, Wuhan, Guangzhou, Chengdu. The majority of children's age were from 7 to 18. From 1950' till now, growth secular trend in Han nationality children was obvious. During the last 30 years, the average body height increase was 2.66 (boys) and 2.4 (girls) cm and body weight increase was 1.64 (boys) and 1.14 (girls) kg in each decade. The differences of increase level were shown in each of the three decades and the largest increase value was in the last decade. The increase value at period of growth spurt was higher than other ages. Age at peak height velocity was 1 to 2 years earlier than before in most of the cities, from 1930' up to present, the growth secular trend also was obvious in Beijing, Nanjing, Shanghai, Guangzhou and Hangzhou. During the last half century, height increased 1.12-2.66 cm in boys and 1.42-2.67 cm in girls and weight increased 0.56-1.27 kg in boys and 0.65-1.18kg in girls in each decade.