Graduate Program in Collective Health, Universidade Federal do Espírito Santo - Vitória (ES), Brazil.
Universitary Hospital Cassiano Antônio de Moraes, Universidade Federal do Espírito Santo - Vitória (ES), Brazil.
Rev Bras Epidemiol. 2021 May 28;24:e210031. doi: 10.1590/1980-549720210031. eCollection 2021.
This study aimed to investigate the association between sleep duration and excess weight in Brazilian adolescents.
This is a cross-sectional study conducted with 65,837 adolescents, aged 12 to 17 years, enrolled in the Study of Cardiovascular Risks in Adolescents (ERICA). Sleep duration was assessed by means of a questionnaire focusing on weekday and weekend hours of sleep. Nutritional status was assessed based on body mass index, and participants were classified according to age and gender. The statistical analysis was performed with the Stata 13 software, using the survey command. Poisson regression was used to determine the association of excess weight with sleep duration categories.
A decline in sleep duration was associated with advancing age. The prevalence of short and long-term sleep among adolescents was 17.9 and 3.6%, respectively, while overweight was diagnosed in 25.5% of the sample. Adolescents who reported having short sleep had 10% (PR = 1.10; 95%CI 1.06 - 1.15) more overweight, while those who reported sleeping more than 11 hours had approximately 12% (PR = 0.88; 95%CI 0.78 - 0.99) less excess weight.
Our findings reinforce the assumption that insufficient sleep poses health risks, and encouraging regular and sufficient sleep may be a cost-effective intervention for the prevention of overweight in adolescence.
本研究旨在探讨巴西青少年的睡眠时间与超重之间的关联。
这是一项横断面研究，共纳入了 65837 名年龄在 12 至 17 岁的青少年，他们参加了青少年心血管风险研究（ERICA）。通过一份专注于工作日和周末睡眠时间的问卷来评估睡眠时长。营养状况根据体重指数进行评估，参与者根据年龄和性别进行分类。使用 Stata 13 软件的调查命令进行统计分析。采用泊松回归来确定超重与睡眠时间类别之间的关联。
睡眠时间的减少与年龄的增长有关。青少年中短期和长期睡眠的患病率分别为 17.9%和 3.6%，而超重的比例在样本中占 25.5%。报告睡眠时间短的青少年超重的风险增加了 10%（PR=1.10；95%CI 1.06-1.15），而报告睡眠时间超过 11 小时的青少年超重的风险降低了约 12%（PR=0.88；95%CI 0.78-0.99）。
我们的研究结果证实了睡眠不足会对健康造成风险的假设，鼓励青少年保持规律且充足的睡眠可能是一种具有成本效益的超重预防干预措施。
