Sun Ying, Tao Fangbiao, Su Pu-Yu
Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui Province, PR China.
Ann Hum Biol. 2012 Nov-Dec;39(6):461-7. doi: 10.3109/03014460.2012.712156. Epub 2012 Aug 6.
To provide up-to-date pubertal characteristics in a representative population of boys from both urban and rural areas of China.
The China Puberty Research Collaboration enrolled 15 011 boys of Chinese Han ethnicity aged 6.0-18.9 years in eight regions including both urban and rural areas. Stages of genital and pubic hair development were assessed by trained physicians according to the Tanner method. Testicular volume was evaluated with a Prader orchidometer.
Median age for onset of testicular volume of 4 mL or greater was 11.02 years. Median age for onset of genital (G2), pubic hair development (PH2) and spermarche was 11.24 years, 12.67 years and 14.32 years, respectively. Boys with BMI ≥ 85th percentile reached the onset of TV ≥ 4 ml (11.09 years), G2 (11.34 years) and G3 (13.01 years) later than boys with a normal BMI (10.95 years, 11.1 years and 12.88 years, respectively). Urban boys achieved pubertal milestones at an earlier age than rural peers except for G5 (13.4 vs 13.76 years) and PH5 (12.86 years vs 13.14 years).
There is an asynchronous pattern in the onset of puberty among Chinese boys. Higher BMI is related to early pubertal onset but fast pubertal progression. Urban boys achieved onset of puberty earlier than rural boys in China.
在中国城乡地区具有代表性的男孩群体中提供最新的青春期特征。
中国青春期研究协作组在包括城乡地区在内的八个地区招募了15011名6.0 - 18.9岁的汉族男孩。由经过培训的医生根据坦纳方法评估生殖器和阴毛发育阶段。用普拉德睾丸测量器评估睾丸体积。
睾丸体积达到4毫升或更大时的中位年龄为11.02岁。生殖器发育（G2）、阴毛发育（PH2）和首次遗精的中位年龄分别为11.24岁、12.67岁和14.32岁。体重指数（BMI）≥第85百分位数的男孩达到睾丸体积≥4毫升（11.09岁）、G2（11.34岁）和G3（13.01岁）的起始年龄晚于BMI正常的男孩（分别为10.95岁、11.1岁和12.88岁）。除了G5（13.4岁对13.76岁）和PH5（12.86岁对13.14岁）外，城市男孩达到青春期里程碑的年龄比农村同龄人早。
中国男孩青春期开始存在异步模式。较高的BMI与青春期早发但进展迅速有关。在中国，城市男孩青春期开始早于农村男孩。
