Observational studyFrontiers in public health2026
Screen time, physical activity, sleep, and depression risk in adolescents: an observational study based on the compositional isotemporal substitution model.
Observational study in Frontiers in public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Associations of reallocating time between physical activity, sedentary behavior, and sleep with mental health among Chinese adolescents: an isotemporal substitution analysis.Health and quality of life outcomes · 2026Article
- Within-person associations of reallocating recreational screen time to moderate-to-vigorous physical activity with depressive symptoms among university students with disabilities: an intensive longitudinal study.Frontiers in public health · 2026Observational
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Authors and funding
16 authors.
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Abstract
Background: Adolescent depression is linked to daily activities like screen use, physical activity, and sleep. Most studies examine these factors separately. This study investigates the relationship between screen time, physical activity, sleep, and depressive symptoms in adolescents using compositional isotemporal substitution models (CISM). Methods: A cross-sectional study collected data from 6,666 adolescents in Hefei, China, using self-administered questionnaires. Compositional Data Analysis was used to examine 24-h activity patterns and their association with depression. A compositional linear regression model was constructed to explore the relationships between screen time, low-intensity (LPA) and moderate-to-vigorous physical activity (MVPA), sleep (SLP), and adolescent depression. The CISM was then applied to analyze the effects of reallocating and substituting time between different activities on depression scores. Results: The compositional linear regression model revealed a significant positive correlation between screen time and depression relative to the remaining activities (β Conclusion: The study highlights that reducing screen time and increasing physical activity or sleep can help alleviate depressive symptoms in adolescents.
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