Early Moderate to Vigorous Physical Activity After Concussion Is Associated With Faster Symptom Resolution Time.
Jacob G Rademacher, Mathew J Wingerson, Katherine L Smulligan and 3 others
PMID 37295788WHAT IT FOUND
Adolescents recovering from concussion who engaged in more than 30 minutes of moderate to vigorous physical activity daily resolved symptoms faster than those who did less.
This association persisted even after adjusting for initial symptom severity and sex.
Key findings
01Participants recording more than 30 minutes of moderate to vigorous physical activity per day had a median symptom resolution time of 15 days, compared to 35 days for those recording 30 minutes or less.
02Higher time spent in moderate to vigorous physical activity was associated with faster symptom resolution in a multivariable model that adjusted for sedentary time, step frequency, sex, and initial symptom severity.
03General movement metrics, such as sedentary time or light activity time, were not significantly associated with symptom resolution time.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study is observational, so it cannot prove that MVPA causes faster recovery. It is possible that adolescents with milder symptoms were naturally able to move more. Activity monitoring began between 2 and 14 days post-injury, so the study does not address the safety or efficacy of activity in the first 48 to 72 hours. The Fitbit device estimates intensity based on heart rate and cannot distinguish between moderate and vigorous activity within the MVPA zone. Recovery was defined solely by self-reported symptom resolution, ignoring other domains like cognitive function or balance. Participants were recruited from a single pediatric sports medicine center, which may limit generalizability to other populations or settings.
Declared interests
No conflicts of interest or funding sources were reported in the provided text.
The easy way to misread this
Do not interpret this as evidence that starting high-intensity exercise immediately after injury speeds recovery. The monitoring period began at least 2 days post-injury, and the authors note that MVPA in the first 72 hours may be detrimental.