[1] Despite its long association with American football, this type of contact is now considered to be dangerous play by league authorities due to the potential of causing serious injury.
Helmet manufacturers are constantly improving their designs in order to best protect their users against injuries from such collisions.
The NFL also ordered Toyota Motor Company to stop using a similar helmet collision in its advertisements.
[4] Despite the safety concerns, in 2010, some professional football players criticized bans on helmet-to-helmet collisions on the basis that gridiron football is a game that is supposed to be composed of the world's biggest and best athletes, and placing such restrictions "waters down" the game.
[16] Head-to-head collisions and resulting concussions may occur in a variety of sports, including football, hockey and lacrosse.