Relationships between aggression, sensation seeking, brain stiffness, and head impact exposure: Implications for head impact prevention in ice hockey by Melissa S. DiFabio, Daniel R. Smith, Katherine M. Breedlove, Thomas A. Buckley, Curtis L. Johnson

“…Results Number of head impacts sustained was significantly related to the number of penalty minutes accrued, normalized to number of games played (r = .62, p < .01). …”
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