title: Sudden impact.
authors.forename: Bruce
authors.initials: B
authors.lastname: Reider
mesh_terms: D054874:Athletic Performance / Q000502:physiology*; D001924:Brain Concussion / Q000503:physiopathology*; D005538:Football / Q000293:injuries*; D006801:Humans; D008297:Male; D020127:Recovery of Function / Q000502:physiology*
keywords: American football; concussion; head impact; return to play