大庆市健康青少年女性青春期性发育调查

目的了解中国北方健康女性青少年青春期性发育过程。方法采用横断面和纵向随访相结合的方法,对大庆市288名健康青少年女性进行为期4年的随访调查,观察身高、体重、体脂比例、第二性征、血清促卵泡生成素(FSH)、促黄体生成素(LH)、雌二醇水平的变化。结果大庆市青少年女性青春期性发育始动年龄为8.5岁±1.1岁,性发育始动时血清FSH、LH、雌二醇水平分别为0.2mIU/L、1.1mIU/L、0.06nmol/L(第95百分位数分别为2.5mIU/L、2.3mIU/L、0.12nmol/L)。月经初潮的年龄为12.4岁±1.2岁。乳房开始发育的平均年龄为8.5岁±1.6岁。结论中国北方青少年女性青春期性发育年龄有显著提前。

Puberty development of the healthy adolescent girls of Daqing city, Heilongjiang province

OBJECTIVE: To investigate the process of puberty development of healthy adolescent girls in Northern China. METHODS: 288 adolescent girls of Daqing city, Heilongjiang province, aged 5 to 16, were studied and followed up yearly for four years. The height, weight, fat percentage, second sex characteristics, and the blood levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), and estradiol (E(2)) were examined. RESULTS: The mean age of puberty onset of these healthy adolescent girls was 8.5 years +/- 1.1 years. The blood levels of FSH, LH and E(2) were 0.2 mIU/L, 1.1 mIU/L and 0.06 nmol/L respectively (the 95 percentiles were 2.5 mIU/L, 2.3 mIU/L and 0.12 nmol/L respectively). Their mean age of menarche was 12.4 years +/- 1.2 years. The mean age of breast development was 8.8 years +/- 1.1 years. CONCLUSION: The girls in Northern China begin their puberty development at younger ages than reported before.