Today I watched a National Science Foundation video on the Science of Football: Kinematics.
Give it a look. The breakdown of speed, velocity, direction and how they all work together is explained simply and is easy to understand. A running back was videotaped so trainers and scientists could see how top velocity might be reached faster. Successful running backs study acceleration, velocity, size, and other parameters to compete more successfully and reach the end zone ahead of the competition.
You might also like to check out Carla McClafferty's new book on football, head injuries, and all the research going into the health aspects of the sport for young athletes and adults.
There is a lot more to playing football than stadium dogs, snow cones and peanuts. Go science!