I remember creating a whole thread on this a while back and it was quickly taken over by people arguing about whether or not players had a proper lean when they're running.
I still think the running animation is a function of guys not being able to hit their top speed in full stride in that confined room. Sure you can run hard and fast very quickly (like a 40-yard
Dash,) but players on the field aren't running dashes or sprints... they're either gradually building up to their top speed, or running with patience to find the lane before they turn on the jets. That doesn't happen in Madden. Everyone in Madden looks like they're running on a treadmill, and the actual animation in the game looks like it's some sort of looped or repeating animation to try to simulate a player running a long distance.
What we need is EA to mo-cap someone actually running a long distance so we can have all phases of the run in the game.