Comparative Study

Baseline evaluation in youth ice hockey players: comparing methods for documenting prior concussions and attention or learning disorders.

J Orthop Sports Phys Ther. 2014 May 1;44(5):329-35.
Article

Head impact exposure sustained by football players on days of diagnosed concussion.

Med Sci Sports Exerc. 2013 Apr 1;45(4):737-46.
Comparative Study

Frequency and location of head impact exposures in individual collegiate football players.

J Athl Train. 2010 Nov 1;45(6):549-59.