Greater screen time is associated with adolescent obesity: A longitudinal study of the BMI distribution from Ages 14 to 18

Jonathan A. Mitchell, Daniel Rodriguez, Kathryn H. Schmitz, Janet Audrain-Mcgovern

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Objective: Previous research has examined the association between screen time and average changes in adolescent body mass index (BMI). Until now, no study has evaluated the longitudinal relationship between screen time and changes in the BMI distribution across mid to late adolescence. Design and Methods: Participants (n = 1,336) were adolescents who were followed from age 14 to age 18 and surveyed every 6 months. Time spent watching television/videos and playing video games was self-reported (<1 h day-1, 1 h day-1, 2 h day-1, 3 h day-1, 4 h day -1, or 5+ h day-1). BMI (kg m-2) was calculated from self-reported height and weight. Longitudinal quantile regression was used to model the 10th, 25th, 50th, 75th, and 90th BMI percentiles as dependent variables. Study wave and screen time were the main predictors, and adjustment was made for gender, race, maternal education, hours of sleep, and physical activity. Results: Increases at all the BMI percentiles over time were observed, with the greatest increase observed at the 90th BMI percentile. Screen time was positively associated with changes in BMI at the 50th (0.17, 95% CI: 0.06, 0.27), 75th (0.31, 95% CI: 0.10, 0.52), and 90th BMI percentiles (0.56, 95% CI: 0.27, 0.82). No associations were observed between screen time and changes at the 10th and 25th BMI percentiles. Conclusions: Positive associations between screen time and changes in the BMI at the upper tail of the BMI distribution were observed. Therefore, lowering screen time, especially among overweight and obese adolescents, could contribute to reducing the prevalence of adolescent obesity.

Original languageEnglish (US)
Pages (from-to)572-575
Number of pages4
JournalObesity
Volume21
Issue number3
DOIs
StatePublished - Mar 1 2013

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Pediatric Obesity
Age Distribution
Longitudinal Studies
Body Mass Index
Social Adjustment
Video Games
Television
Sleep
Mothers
Exercise
Education
Weights and Measures

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Nutrition and Dietetics

Cite this

Mitchell, Jonathan A. ; Rodriguez, Daniel ; Schmitz, Kathryn H. ; Audrain-Mcgovern, Janet. / Greater screen time is associated with adolescent obesity : A longitudinal study of the BMI distribution from Ages 14 to 18. In: Obesity. 2013 ; Vol. 21, No. 3. pp. 572-575.
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abstract = "Objective: Previous research has examined the association between screen time and average changes in adolescent body mass index (BMI). Until now, no study has evaluated the longitudinal relationship between screen time and changes in the BMI distribution across mid to late adolescence. Design and Methods: Participants (n = 1,336) were adolescents who were followed from age 14 to age 18 and surveyed every 6 months. Time spent watching television/videos and playing video games was self-reported (<1 h day-1, 1 h day-1, 2 h day-1, 3 h day-1, 4 h day -1, or 5+ h day-1). BMI (kg m-2) was calculated from self-reported height and weight. Longitudinal quantile regression was used to model the 10th, 25th, 50th, 75th, and 90th BMI percentiles as dependent variables. Study wave and screen time were the main predictors, and adjustment was made for gender, race, maternal education, hours of sleep, and physical activity. Results: Increases at all the BMI percentiles over time were observed, with the greatest increase observed at the 90th BMI percentile. Screen time was positively associated with changes in BMI at the 50th (0.17, 95{\%} CI: 0.06, 0.27), 75th (0.31, 95{\%} CI: 0.10, 0.52), and 90th BMI percentiles (0.56, 95{\%} CI: 0.27, 0.82). No associations were observed between screen time and changes at the 10th and 25th BMI percentiles. Conclusions: Positive associations between screen time and changes in the BMI at the upper tail of the BMI distribution were observed. Therefore, lowering screen time, especially among overweight and obese adolescents, could contribute to reducing the prevalence of adolescent obesity.",
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Greater screen time is associated with adolescent obesity : A longitudinal study of the BMI distribution from Ages 14 to 18. / Mitchell, Jonathan A.; Rodriguez, Daniel; Schmitz, Kathryn H.; Audrain-Mcgovern, Janet.

In: Obesity, Vol. 21, No. 3, 01.03.2013, p. 572-575.

Research output: Contribution to journalArticle

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