Piggy-backing off of my last post, Dr. Thomas believes (and I tend to agree) that there has been a gigantic movement away from fitness to sports. We've gone to caring more about kids who are good at a playing a competitive game, and thinking fitness will follow after they get good at the game. This thinking is backwards. Fitness is a prerequisite to sport; not vice versa. In fact, thinking that fitness follows sport participation creates injuries.
Think of it like this:
A kid should have stability in rotating his/her torso before playing basketball.
A track and field sprinter should have hip mobility and proper core activation before ever participating in a race.
A soccer player should have proper neck stabilization before ever head-butting the ball.
Does this make sense? Competitive sport is great, it drives us and gives us something to do that doesn't seem like exercise, but in a world of unsurpassed sedentary living, we cannot jump to sport without having the fundamentals down. And you'd be blown away at how many do not have these down.
The good news is that because the fundamentals are fundamental, they can get "turned back on," so to speak, quickly and easily.