Instructions
Launch "Madden NFL 11" from your game console. When the game loads, scroll down to, and click, "My Settings." Click "Game Options."
Scroll to the bottom of the list and highlight "Auto Sprint." Press the analog stick to the right to turn the feature off.
Begin a game. Press and hold "RT" on the Xbox 360 controller or the "R2" trigger on the PlayStation 3 controller to sprint. When you release "RT" or "R2," the player will run at a normal speed.