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1983年9～10月曾对我区乡村7～17岁7031名男女中小学生,进行了握力调查,同时,对其中的3 069名男女学生加测了手长,结果如下。青少年手长男女发育曲线同样出现两次交叉。平原地区学生交叉点在9岁和13岁;丘陵地区学生交叉点在10岁和14岁。平原地区男女学生的手长突增年龄均比丘陵地区提前一年。但丘陵地区学生的手均比平原地区的长。
From September to October 1983, 7031 primary and secondary school students from 7 to 17 years of age in rural areas of our county were surveyed. At the same time, a total of 3 069 male and female students were tested for hand grip strength. Results are as follows. Adolescent hand length male and female development curve also appeared twice cross. Plains students cross at 9 and 13; hilly areas cross at 10 and 14. The male and female students in the plains suddenly increased their age by one year earlier than the hilly areas. However, students in hilly areas have more hands than the plains.