For the youths , the values of endomorph and ecto - morph increased at the age 7 - 11 , while the values of mesomorph decreased 青少年随着年龄的增长，城乡男女生在7 11岁内、外因子值上升，中因子值下降。
2.
Then , the values of endomorph and mesomorph increased at 12 - 18 and over 30 years old groups while those of ectomorph decreased 进入成年以后，男女性内、中因子值先小幅下降，然后逐渐上升，外因子值持续下降。
