Collective Force of Head Hits, Not Just the Number of

When Jeffrey Vlk played running back in high school in the 1990s and then safety in college, he took and delivered countless tackles during full-contact football practices. Hitting was a mainstay, as were injuries, including concussions. When he became a coach at Buffalo Grove High School outside Chicago in 2005, Vlk did what he had … Continue reading “Collective Force of Head Hits, Not Just the Number of”

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