Sleep patterns and television viewing in relation to obesity and blood pressure: Evidence from an adolescent Brazilian birth cohort

J. C K Wells, P. C. Hallal, F. F. Reichert, A. M B Menezes, C. L P Araújo, C. G. Victora

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Disruption of circadian rhythms has been associated with obesity in children and adolescents, and with hypertension in adults, in industrialized populations. Objective: We examined cross-sectional associations between sleep duration or television viewing and obesity and blood pressure in Brazilian adolescents. Design: The sample consisted of 4452 adolescents aged 10-12 years participating in a prospective birth cohort study in Pelotas, Brazil. Sleep duration and television viewing were determined through questionnaires. Obesity was assessed using international cut-offs for body mass index (BMI), and body fatness by skinfold thicknesses. Blood pressure was measured using a validated monitor. Results: Short sleep duration was associated with increased BMI, skinfolds, systolic blood pressure, activity levels and television viewing. Each hour of sleep reduced BMI by 0.16 kg/m2 (s.e. 0.04), and was associated with odds ratio for obesity of 0.86 (s.e. 0.04), both P

Original languageEnglish (US)
Pages (from-to)1042-1049
Number of pages8
JournalInternational Journal of Obesity
Volume32
Issue number7
DOIs
StatePublished - Jul 2008
Externally publishedYes

Keywords

  • Adolescent
  • Blood pressure
  • Sleep
  • Television

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Public Health, Environmental and Occupational Health
  • Endocrinology
  • Food Science
  • Endocrinology, Diabetes and Metabolism

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