Duração do sono e o excesso de peso em adolescentes brasileiros : estudo ERICA

• Autor(a) principal: Borges, Marcela Aparecida de Souza
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/10123
• topic: Sleep; Overweight; Obesity; Adolescents; Sobrepeso; Saúde Coletiva; Sono; Obesidade; Adolescentes; 614

Child obesity is a worldwide aggravation which constitutes a challenge to public health because of the magnitude and associated risks of comorbidity involving adult cardiovascular diseases. In the last decades, epidemiological evidence was accumulated associating sleep duration with obesity. This came from observing a continuous increase in weight where there was a continuous reduction of sleep time. The objective of this research was to investigate the correlation between sleep duration and obesity in Brazilian teenagers. The research project, called “The Study of Cardiovascular Risks in Adolescents” (Estudo de Riscos Cardiovasculares em Adolescentes – ERICA), involved a sample group of 65,837 teenagers in a schoolbased cross-sectional study, involving teens from across the nation ages 12 to 17, in cities with more than 100,000 habitants. Sleep habits were determined through the use of questionnaires regarding adolescent bedtime and waking schedules, both during the week and on weekends. Less than 7 hours a night was considered short sleep duration, and more than 11 hours a night long duration. Excess weight was classified using a body mass index according to age and gender. The sample used crude and adjusted data analysis. There was a decline in sleep duration corresponding with an increase in age across the adolescent years. The prevalence of short sleep duration among adolescents was 17,9% (95%CI 17,0-18,8) and long sleep duration 3,6% (95%CI 3,0-4,3), while the prevalence of excess weight was of 25,5%. It was observed that the correlation of shorter sleep and excess weight continued after the adjustment of possible variables confounding. Teenagers with short sleep duration had an increase of 8% in the prevalence of overweight (PR = 1,08; 95%CI 1,00-1,17), while individuals who slept on average for more than 11 hours had a reduction of 19% (PR = 0,81; 95%CI 0,67-0,98). Therefore, the results suggested that in the teenage years, shorter sleep durations can be associated with excess weight, and encouraging regular and sufficient sleep is an intervention to prevent excess weight with a favorable cost to benefit correlation.