ArticlePsychiatry research2025
Adolescent smartphone use, sleep, and physical activity: daily associations between sensor-based measures in the adolescent brain cognitive development (ABCD) study.
Article in Psychiatry research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
What it found
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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.
The trial behind it
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Digital health interventions for promoting physical activity among adolescents: a systematic review.Frontiers in public health · 2026Pooled it
- The Relationship Between Physical Activity and Mobile Phone Addiction Among Adolescents: A Cross-Lagged Study.Behavioral sciences (Basel, Switzerland) · 2026Article
- Is there an association between dietary fiber intake, screen time, and physical activity among students aged 14 to 17 years?-a cross-sectional study.Translational pediatrics · 2026Article
- Heterogeneous Associations Between Objectively Measured Screen Time and Sleep in Early Adolescence.Technology, mind, and behavior · 2026Article
- Agreement between smartphone-based mobile sensing and actigraphy sleep metrics in young people with bipolar disorder.medRxiv : the preprint server for health sciences · 2026Article
- Prediction of Smartphone Addiction Among Korean Adolescents Based on Physical Activity and Mental Health: A Machine Learning Analysis Using LASSO and SHAP From the Korea Youth Risk Behavior Survey.Alpha psychiatry · 2026Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
purposePotential health consequences of adolescent smartphone use are a growing public concern. Improving upon existing, largely self-report-based research, this study investigated relationships between adolescent smartphone use, sleep, and physical activity using passive sensor measures.
methodsOver three weeks, 791 Adolescent Brain Cognitive Development (ABCD) Study participants (M
resultsMixed-effects models found that daytime/evening application use (6:00AM-7:59PM) predicted reduced exercise, more time sedentary, and fewer daily steps (Standardized β=-0.21-0.07, P<.001). Late-evening use (8:00PM-9:59PM) modestly predicted increased sedentary time and reduced steps (Standardized β=-0.05-0.02, P<.001). Late-night use (10:00PM-5:59AM) predicted reduced sleep, delayed sleep onset, delayed waking, increased sedentary time, and fewer daily steps (Standardized β=-0.16-0.27, P<.001). After disaggregating within and between-person smartphone use, within-person relationships remained significant, with associations of similar magnitude to the initial analyses (daytime/evening use: standardized ꞵ=-0.22-0.07, P<.001; late-evening use: standardized ꞵ=-0.05-0.02, P<.001; late-night use: standardized ꞵ=-0.16-0.24, P≤.002), indicating daily-level relationships unattributable to between-subject differences. Examining smartphone use effects by hour relative to sleep onset indicated that only use recorded after initial sleep onset significantly predicted sleep, while use recorded 3-12 hours before sleep onset significantly predicted step counts.
conclusionsUsing passive sensor data, we found significant associations between adolescent smartphone use, physical activity, and sleep which differed by time of day and remained significant within subjects. Experimental replication is recommended to strengthen tentative causal claims.
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