impact in youth football (high school level or younger);(2) identify modifiable risk factors for
concussion and head impact; and (3) evaluate the effectiveness of prevention strategies in
tackle football at any level. Methods Nine databases (CINAHL Plus with Full Text; Cochrane
Central Register of Controlled Trials; EMBASE; ERIC; Ovid MEDLINE (R) and Epub Ahead
of Print, In-Process & Other Non-Indexed Citations and Daily; ProQuest Dissertations & …