“…In 11 studies, researchers assessed knowledge or beliefs regarding general ACL injury-prevention programming*; in 5, they asked specifically about the Federation Internationale de Football Association (FIFA) 11þ 39,41,48,49,55 ; and in 3, they considered other injury-prevention training programs (ie, Activate, 60 Knee Control, 50 and Knokl for dit knae 40 ). A behavioral theory (Health Belief Model 40,41,46,50,58 [n ¼ 5]; Theory of Planned Behavior/Reasoned Action 28,39,57,58 27,28,39,41,[46][47][48][49][50][51][52][54][55][56][57][58] Thirteen studies were conducted outside the United States. [39][40][41][47][48][49][50][51][54][55][56]59,60 Of the 6 studies conducted within the United States, 4 examined high school alone…”