巴西女学生样本中的青春期：时间及人体测量特征
Puberty in a sample of Brazilian schoolgirls: timing and anthropometric characteristics.
作者信息
Feibelmann Taciana Carla Maia, Silva Adriana Paula da, Resende Daniela Cristina Silva, Resende Elisabete Aparecida Mantovani Rodrigues de, Scatena Lúcia Marina, Borges Maria de Fátima
机构信息
Department of Clinical Medicine, Department of Endocrinology and Metabolism, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil.
Department of Social Medicine, UFTM, Uberaba, MG, Brazil.
出版信息
Arch Endocrinol Metab. 2015 Apr;59(2):105-11. doi: 10.1590/2359-3997000000021. Epub 2015 Apr 1.
OBJECTIVE
The objective of this study was to determine the age at which puberty begins, age of menarche and anthropometric data of the participants at different stages of puberty.
SUBJECTS AND METHODS
This is a cross-sectional study in which we evaluated 665 girls, a sample representing the female schoolchildren population in Uberaba.
RESULTS
We found that thelarche, pubarche, underarm hair and menarche were attained at the age of 9.8 ± 1.4, 10.2 ± 1.4, 10.5 ± 1.5 and 11.7 ± 1.3 years, respectively. The mean interval between thelarche and menarche (ITM) was 1.7 ± 1.3 years. The prevalence of overweight and obesity was 31.3% and 95% of the participants began at thelarche between the age of 7 and 12 years.
CONCLUSION
These values indicate a secular tendency to the decrease of the age of menarche and an earlier start of puberty. It is very important to understand these parameters to establish public policies aimed at plans to prevent these early events, especially regarding control of the prevalence of obesity.
目的
本研究的目的是确定青春期开始的年龄、月经初潮的年龄以及参与者在青春期不同阶段的人体测量数据。
对象与方法
这是一项横断面研究，我们评估了665名女孩，该样本代表乌贝拉巴市的女学生群体。
结果
我们发现乳房发育、阴毛生长、腋毛生长和月经初潮分别在9.8±1.4岁、10.2±1.4岁、10.5±1.5岁和11.7±1.3岁时出现。乳房发育与月经初潮之间的平均间隔时间（ITM）为1.7±1.3岁。超重和肥胖的患病率分别为31.3%，95%的参与者在7至12岁之间开始乳房发育。
结论
这些数值表明月经初潮年龄有下降和青春期提前开始的长期趋势。了解这些参数对于制定旨在预防这些早期事件的公共政策非常重要，尤其是在控制肥胖患病率方面。
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