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目的 为了解和评价青少年性发育状况.方法 对天津市3512名7～21岁青少年(男 1554名,女 1958名)进行了性发育调查,其中 295名(男 128名,女 167名)测定了5项性激素.依据各性征的分期计算出男、女总性发育程度,计算睾丸、阴茎长度和直径的正常范围.结果 睾丸和阴茎均在12岁开始骤增,并逐渐增加至青春期.女性乳房和阴毛随年龄增长而增加.月经初潮平均年龄 13±1.19岁,初次遗精平均年龄 14.12士1,28岁.随着性发育程度的提高和性激素水平增加,每种激素在各性发育期之间差异有显著性(P<0.0001).结论 总性发育程度能全面反映性发育状况,性发育随年龄而趋成熟,性激素随性发育程度增高而增加.
Objective To understand and evaluate the sexual development of adolescents.Methods Sexual development of 3512 adolescents aged 7-21 years (1554 males and 1958 females) in Tianjin was investigated, of which 295 (male 128, female 167) 5 sex hormones.According to the sexual characteristics of the staging calculated male and female total sexual development, testicles, penis length and diameter of the normal range.Results Testicles and penis began to surge in the 12-year-old, and gradually increased to adolescence. Breast and pubic hair increased with age.The average age of menarche 13 ± 1.19 years old, the average age of the first spermatorrhea 14.12 persons 1,28 years old.With the increase of sexual development and sex hormone levels, each hormone in all developmental stages (P <0.0001) .Conclusion The total sexual development can fully reflect the sexual development, sexual development matures with age, sex hormone increases with sexual development increased.