Relationships between Short Sleep, Obesity, and Screen Time in High School Students

고등학생의 수면 부족, 비만, 스크린 타임 사이의 관련성 연구

  • Ha, Yeongmi (College of Nursing & Institute of Health Sciences, Gyeongsang National University) ;
  • Park, Hyunju (Department of Nursing, Kangwon National University)
  • 하영미 (경상대학교 간호대학.건강과학연구원) ;
  • 박현주 (강원대학교 춘천캠퍼스 간호학과)
  • Received : 2014.02.10
  • Accepted : 2014.04.28
  • Published : 2014.05.31


Purpose: The purpose of this study was to investigate relationships between short sleep, obesity, and screen time. Methods: Data were obtained from a survey using a sample of 1,166 academic, and 597 vocational high school students. A structured questionnaire was used to assess demographics, hours spent in sleep, TV viewing, internet usage, and game playing. Obesity was determined using the body mass index. Descriptive statistics, Cochran Mantel Haenszel Chi-square test, and multiple logistic regression with dummy variables were performed. Results: Short sleep (<8 hours/day) was significantly related to obesity, not in academic school students, but in vocational school students. Academic high school students who had enough sleep (${\geq}8$ hours/day), had more time spent on TV viewing, internet usage, and game playing. Similar results were found in vocational high school students except for internet use. Interestingly, students with better school performance spent significantly less time in TV viewing, internet usage, and game playing, and therefore had a lower risk of obesity in academic school students. Conclusion: There is a significant relationship between short sleep and obesity that was found only in vocational high school students. The relationship between short sleep and screen time was not significant in Korean high school students.



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