青春前期男性儿童体脂含量与性器官发育关系的探讨

A Study on the Relationship Between Body Fat and Sexual Organ Development in Prepubertal Male Children

选取 8岁与 10岁男生 73 0例进行横断面研究。结果 :体脂比在 10 %～、15 %～、2 0 %～和 2 5 %～的男生睾丸横径、长径各组间无显著差异性 (P >0 0 5 ) ;体脂比在 3 5 %以上组男生左右辜丸长径、横径低于其它组。阴茎长度和横径随体脂比上升而下降 ,体脂比与阴茎长度呈明显的负相关 (r =-0 5 13 )、回归方程为 y=-0 .70 6 5x + 4 5 .6 3 5 8。

To study the relationship between body composition and the development of sexual organ among male children in prepuberty.Method:A cross section investigation was conducted in 730 male children aged 8 and 10 years.Result:The length and width of both testicles have no significant difference in groups with % BF less than 35%.These indexes of the group with %BF more than 35% are less than those of the other groups.With the %BF increasing,the length and width of penis descend.There was negative relationship between penis length and %BF (r=-0 513),regression equation:y=-0 7065+45 6358.