Moderate out-of-school screen time during the first 3 days following a concussion was associated with faster symptom resolution in a small cohort of youth aged 11 to 17 years, according to a retrospective analysis published in British Journal of Sports Medicine. The findings suggest that both lower and higher levels of screen use were generally associated with slower symptom resolution than moderate use, though the study’s design and size preclude causal conclusions.
Why It Matters for Physicians
Screen time guidance is among the most common counseling points physicians and athletic trainers offer to adolescents recovering from concussion, yet current concussion management protocols provide limited specifics on ideal timing, duration, or type of use. This study aimed to address that gap using objective, wearable-device measurement rather than self-report — a methodological distinction from much prior research in this area, which has relied on self-reported screen time. The findings may help frame counseling conversations, though the researchers emphasized that clinical trials are needed before recommendations can be refined.
Key Findings
Among the 80 participants (mean age 14.3 years, 65% male, 71% White), most concussions (83%) were sport-related. Median follow-up was 16 days following injury; 6 patients (8%) still had symptoms at the 45-day censoring point.
Mean out-of-school screen time in the first week following concussion was 358 minutes per day.
In adjusted Cox proportional hazards models accounting for sex, age, visual symptoms, and post-concussion symptom (PCS) score, a median of 141 minutes of screen time per day during the first 3 days post-injury was associated with a 35% faster rate of symptom resolution compared with 260 minutes per day.
In secondary unadjusted exploratory analyses, youth with 120 to 240 minutes of daily screen time during those first 3 days had faster symptom resolution than those with less than 120 minutes per day and those with more than 240 minutes per day, though the comparison with the more than 240 minutes group did not reach statistical significance.
Screen type also appeared relevant in unadjusted exploratory analyses. Smartphone use of 120 to 240 minutes per day was associated with faster symptom resolution compared with less than 120 minutes per day and more than 240 minutes per day. Watching TV for 60 to 120 minutes per day was associated with faster resolution compared with more than 120 minutes per day. Computer/tablet use and gaming were not significantly associated with symptom resolution in either direction.
Smartphone use was the most common activity (mean 224 minutes per day), followed by watching TV (204 minutes per day), computer/tablet use (113 minutes per day), and gaming (60 minutes per day).
“These findings suggest that moderate screen time — not too little or too much — may support concussion recovery,” wrote lead study author Jingzhen Yang, PhD, of the Center for Injury Research and Policy at Nationwide Children’s Hospital, and colleagues.
What This Does Not Show
This was a retrospective analysis of a prospective cohort — it cannot establish that moderate screen time causes faster recovery. The researchers explicitly noted that the relationship between screen time and symptom resolution may be bidirectional: patients with more severe symptoms may have reduced screen use due to discomfort, and those with milder symptoms may be more likely to engage with screens. Causal inference is not supported by the study design.
The sample was small (n = 80) and drawn from hospital-based emergency department and concussion clinics, which may overrepresent more severe presentations. Participants were predominantly White and male, limiting generalizability to broader or more diverse pediatric populations and to those treated in primary care or community settings.
Screen use during school hours was not captured, so the measurements reflect only out-of-school activity. Screen content, brightness, timing relative to sleep, and use of blue-light-blocking glasses were not measured — factors that may independently influence recovery. The exploratory screen-type analyses used unadjusted models with type-specific cut points derived from the data using a generalized additive model, and should be interpreted as hypothesis-generating.
The comparison for TV watching more than 120 minutes per day reached statistical significance, but the comparison for TV watching less than 60 minutes per day did not, and the computer/tablet and gaming comparisons showed no association, further underscoring the preliminary nature of the screen-type findings.
Clinical Context
These findings may inform how physicians and other clinicians frame screen time counseling for adolescent patients with concussion. The findings suggest that very low levels of screen use were associated with slower symptom resolution than moderate use in this cohort, though the study did not directly evaluate complete screen avoidance.
Researchers noted that both excessive and highly restricted screen use were associated with slower symptom resolution in this cohort and framed the findings within a broader literature on balanced digital engagement in adolescents. They suggested that individualized guidance — taking into account injury severity, symptom progression, and recovery milestones — remains important, and that a one-size-fits-all screen time restriction may not reflect current evidence.
Physicians may also consider that the screen-type findings (favoring smartphone and TV over gaming or computer/tablet use) are exploratory, based on unadjusted analyses in a small sample, and require replication before type-specific recommendations can be made with confidence.
The researchers called for randomized controlled trials to establish optimal screen time targets and determine which types of screen activity may support or hinder concussion recovery.
What Physicians Should Know
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This was a retrospective observational cohort study of 80 adolescents; findings are associative and cannot establish causation.
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The apparent “optimal” figure of 141 minutes per day is derived from a spline model and represents an association in this cohort, not a validated clinical target.
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Screen-type analyses (smartphone, TV, gaming, computer/tablet) were unadjusted, exploratory, and used data-derived cut points; these should not be used to make type-specific recommendations at this time.
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Clinical trials are needed before this evidence can support specific screen time targets in concussion management protocols.
Disclosures: The study was supported in part by the Eunice Kennedy Shriver National Institute of Child Health & Human Development (R21HD086451). The authors reported no competing interests.
