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首页> 外文期刊>BMC Pediatrics >Does neighborhood environment influence girls' pubertal onset? findings from a cohort study
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Does neighborhood environment influence girls' pubertal onset? findings from a cohort study

机译：邻里环境是否会影响女孩的青春期发病？队列研究的发现

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Background Pubertal onset occurs earlier than in the past among U.S. girls. Early onset is associated with numerous deleterious outcomes across the life course, including overweight, breast cancer and cardiovascular health. Increases in childhood overweight have been implicated as a key reason for this secular trend. Scarce research, however, has examined how neighborhood environment may influence overweight and, in turn, pubertal timing. The current study prospectively examined associations between neighborhood environment and timing of pubertal onset in a multi-ethnic cohort of girls. Body mass index (BMI) was examined as a mediator of these associations. Methods Participants were 213 girls, 6-8 years old at baseline, in an on-going longitudinal study. The current report is based on 5 time points (baseline and 4 annual follow-up visits). Neighborhood environment, assessed at baseline, used direct observation. Tanner stage and anthropometry were assessed annually in clinic. Survival analysis was utilized to investigate the influence of neighborhood factors on breast and pubic hair onset, with BMI as a mediator. We also examined the modifying role of girls' ethnicity. Results When adjusting for income, one neighborhood factor (Recreation) predicted delayed onset of breast and pubic hair development, but only for African American girls. BMI did not mediate the association between Recreation and pubertal onset; however, these associations persisted when BMI was included in the models. Conclusions For African American girls, but not girls from other ethnic groups, neighborhood availability of recreational outlets was associated with onset of breast and pubic hair. Given the documented risk for early puberty among African American girls, these findings have important potential implications for public health interventions related to timing of puberty and related health outcomes in adolescence and adulthood.
机译：在美国女孩中，青春期发病的背景要比过去更早。早期发作与整个生命过程中的许多有害后果有关，包括超重，乳腺癌和心血管健康。儿童超重的增加被认为是这种长期趋势的关键原因。然而，稀少的研究已经研究了邻里环境如何影响超重，进而影响青春期。当前的研究前瞻性检查了多族裔女孩社区环境与青春期发作时间之间的关联。体重指数（BMI）被作为这些关联的中介者进行了检查。方法正在进行的一项纵向研究中，参与者为213名年龄在6-8岁的女孩。本报告基于5个时间点（基线和4次年度随访）。在基线评估的邻里环境直接观察。每年在诊所评估Tanner阶段和人体测量学。生存分析被用来调查邻域因素对乳房和耻骨毛发的影响，以BMI为中介。我们还研究了女孩种族的改变作用。结果调整收入后，一个邻里因素（娱乐性）预测乳房和阴毛发育延迟发作，但仅适用于非洲裔美国女孩。 BMI并未介导娱乐与青春期发作之间的关联。但是，当模型中包含BMI时，这些关联仍然存在。结论对于非裔美国女孩而非其他族裔女孩而言，娱乐场所的邻里可用性与乳房和阴毛的发作有关。鉴于有记录的非洲裔美国女孩中有青春期早期风险，这些发现对于与青春期的时间安排以及青春期和成年期的相关健康结果有关的公共卫生干预措施具有重要的潜在影响。

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