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Background <p>This study aimed to examine longitudinal changes in screen time, sleep, and sports/exercise activity in early adolescents in the United States.</p> Methods <p>We examined data over four annual assessments collected from the Adolescent Brain Cognitive Development (ABCD) Study (<i>N</i> = 9,519) from baseline (2016–2018, ages 9–10) to Year 3 (2019–2021, ages 12–13). Trends in screen time, sleep, sports/exercise activity, and other activities in a 24-hour time-use paradigm were derived from compositional data analysis, incorporating isometric log-ratio transformations and mixed-effects modeling.</p> Results <p>Screen time increased by 0.23&#xa0;h/day from baseline to Year 1, 1.58&#xa0;h/day from baseline to Year 2, and 3.28&#xa0;h/day from baseline to Year 3. Video game playing increased more in boys, and digital socializing increased more in girls. Sleep duration slightly decreased from baseline to Year 3. Sports/exercise activity slightly decreased from baseline to Year 1, then increased until Year 3. Time spent on other activities decreased by 0.13&#xa0;h/day from baseline to Year 1, 1.60&#xa0;h/day from baseline to Year 2, and 3.38&#xa0;h/day from baseline to Year 3.</p> Conclusions <p>Our findings indicate screen time may have increasingly displaced other activities as early adolescents age.</p>

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Longitudinal changes in screen time, sleep, and sports/exercise activity in early adolescence

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月24日

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  • Jason M. Nagata,
  • Christiane K. Helmer,
  • Zain Memon,
  • Sapna Ramappa,
  • Jennifer H. Wong,
  • Thang Diep,
  • Abubakr A. Al-Shoaibi,
  • Kyle T. Ganson,
  • Alexander Testa,
  • Fiona C. Baker,
  • Kelley Pettee Gabriel,
  • Erin E. Dooley

摘要

Background

This study aimed to examine longitudinal changes in screen time, sleep, and sports/exercise activity in early adolescents in the United States.

Methods

We examined data over four annual assessments collected from the Adolescent Brain Cognitive Development (ABCD) Study (N = 9,519) from baseline (2016–2018, ages 9–10) to Year 3 (2019–2021, ages 12–13). Trends in screen time, sleep, sports/exercise activity, and other activities in a 24-hour time-use paradigm were derived from compositional data analysis, incorporating isometric log-ratio transformations and mixed-effects modeling.

Results

Screen time increased by 0.23 h/day from baseline to Year 1, 1.58 h/day from baseline to Year 2, and 3.28 h/day from baseline to Year 3. Video game playing increased more in boys, and digital socializing increased more in girls. Sleep duration slightly decreased from baseline to Year 3. Sports/exercise activity slightly decreased from baseline to Year 1, then increased until Year 3. Time spent on other activities decreased by 0.13 h/day from baseline to Year 1, 1.60 h/day from baseline to Year 2, and 3.38 h/day from baseline to Year 3.

Conclusions

Our findings indicate screen time may have increasingly displaced other activities as early adolescents age.