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本文对1979和1989年南充城市学生发育资料中的身高、体重和胸围进行了10年动态分析。 1.从表中可见突增高峰以前,年增值及修匀值随年龄增加而增加;突增高峰后随年龄增加而降低。如男生1979年13岁和1989年12岁以前的年增值均随年龄增加而增加,其后随年龄增加而降低。 2.对7～17岁城市男女学生“三项”形态指标的年增长值比较表明,“三项”形态指标突增高峰年
In this paper, the author analyzes the height, weight and chest circumference of Nanchong urban students in 1979 and 1989 for 10 years. 1. It can be seen from the table before the peak surge, the annual increment and repair values increase with age increase; sudden increase with the increase of age and reduce the peak. For example, the annual increases of boys aged 13 and 1979 up to 12 in 1979 both increased with increasing age and then decreased with increasing age. The comparisons of the annual growth of the “three” morphological indicators of boys and girls aged 7 ~ 17 in urban areas show that the “three items”