Youth Athletes Show Distinct Brain Activation During Inhibition Tasks Regardless of Sport Type
fMRI study finds sport participation — not collision exposure — shapes neural processing in children's inhibitory control.
Summary
A new fMRI study examined whether playing collision sports harms children's brain function compared to non-contact sports or no sports at all. Researchers used data from the large-scale HCP-D study, testing 175 children aged roughly 13 years on a response inhibition task while scanning their brains. Behaviorally, all three groups performed equally well. However, both sport groups — collision and non-contact alike — recruited the left Superior Temporal Gyrus more than non-sport peers during inhibition trials. This suggests sport participation broadly shapes how children's brains process self-control tasks, possibly reflecting different cognitive strategies. Importantly, collision sport athletes showed no additional neural deficits compared to non-contact athletes, offering some reassurance to parents and clinicians concerned about repetitive head impacts in youth sports.
Detailed Summary
Concerns about repetitive head impacts in youth collision sports have grown significantly, with parents, coaches, and clinicians questioning whether early exposure to contact sports like football or hockey harms developing brains. This study directly addresses that concern using neuroimaging data from a large, well-characterized pediatric cohort.
Researchers analyzed fMRI data from 175 children (ages approximately 10–17) drawn from the Lifespan Human Connectome Project Development study. Participants were divided into three groups: collision sport athletes (n=48), non-contact sport athletes (n=70), and non-sport activity participants (n=57). All completed the CARIT response inhibition task inside the scanner, which measures the ability to suppress a prepotent motor response — a core executive function.
Behaviorally, no group differences emerged in accuracy or reaction time, suggesting all children performed the task comparably. The neuroimaging results, however, revealed a meaningful distinction: both sport groups showed significantly greater activation in the left Superior Temporal Gyrus compared to non-sport peers during successful response inhibition trials. This region is associated with auditory processing, language, and multisensory integration, and its differential recruitment may reflect sport-trained attentional or strategic processing differences.
Critically, collision sport athletes did not differ from non-contact athletes in any brain region, suggesting that current participation in collision sports does not produce detectable neural deficits in inhibitory control relative to other young athletes. This is a reassuring finding for families navigating decisions about youth sport enrollment.
Several caveats temper these conclusions. The study is cross-sectional, so causal direction cannot be established — children with certain neural profiles may self-select into sports. Cumulative head impact exposure was not directly quantified. The summary is based on the abstract only, limiting full methodological appraisal. Longitudinal studies tracking brain changes over seasons of play remain essential.
Key Findings
- Both sport groups activated the left Superior Temporal Gyrus more than non-sport peers during response inhibition.
- No behavioral differences in accuracy or reaction time were found across all three groups.
- Collision sport athletes showed no additional neural deficits compared to non-contact athletes.
- Sport participation broadly — not collision exposure specifically — appears to shape inhibitory brain processing.
- Findings suggest sport may alter cognitive strategy rather than impair executive function in children.
Methodology
Cross-sectional fMRI study using task-based BOLD signal data from the Lifespan Human Connectome Project Development (HCP-D) dataset. Three groups of children (collision sport, non-contact sport, non-sport) completed the CARIT response inhibition task; whole-brain univariate GLM analysis was cluster-corrected at p<.001.
Study Limitations
The cross-sectional design prevents causal inference — neural differences may reflect self-selection rather than sport effects. Cumulative head impact dose was not directly measured, limiting conclusions about exposure-response relationships. The summary is based on the abstract only, so full methodological details, covariate adjustments, and supplementary analyses could not be evaluated.
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