CitationCalamaro, Christina; Park, Sun; Hee; Mason, Thornton; A; Marcus, Carole; Weaver, Terri; E; Pack, Alan; & Ratcliffe, Sarah (2008). The relationship between short sleep duration and obesity in adolescents. 2008 Add Health Users Conference. Bethesda, MD: University of North Carolina at Chapel Hill, Carolina Population Center.
AbstractIntroduction: Obesity is a major health problem because of increasing prevalence in all ages and related comorbidities. In adolescents, there are limited studies on relationship between obesity and sleep duration. The purpose of this study was to determine association between short sleep duration in adolescents and obesity. Methods: Data was from Add Health, adolescents 12 18 years. Our study population (n=13,568) was from Wave I and Wave II. Weighted multiple logistic regression used to identify relationship between obesity at Wave II and sleep duration, having adjusted for skipping breakfast more than twice per week, race, gender, parental income, more than two hours of TV per day, and obesity at Wave I. Obesity defined as BMI≥, 95th percentile for age and gender. Results: Wave I, mean age was 15.96±0.11 yrs; mean sleep hours were 7.91±0.04. The percentages of adolescents obese at Waves I and II were 10.6 and 11.2, respectively. Adjusted analyses suggest effect of shortened sleep duration in Wave I does not significantly predict obesity in Wave II (p<0.218). However, TV viewing more than two hours per day (p=0.008) and obesity (p<0.001) in Wave I were predictive of obesity in Wave II. Conclusion: The environmental factor of increased television time was significantly associated with weight gain in these adolescents. Shortened sleep duration was not. Studies in younger children support shortened sleep duration as independently predictive of obesity. Further study is needed to determine whether shortened sleep may have differential effects on body mass index, depending on age.
Reference TypeConference proceeding
Book Title2008 Add Health Users Conference