This isn't quite the same thing, but 30 years ago I played football in High School. There wasn't a day in practice or a game when I didn't see "stars" from some hit. The word concussion wasn't even in our vocabulary and it never was mentioned (from what I can recall
). Today things are different, as safety, concussions and head trauma prevention is the number one concern on our HS team, and safety first is pervasive in every action the team takes.