Do you want to improve your speed in 2011? Then, improve your core strength and get closer to your speed potential.
Adequate core strength helps you run fast late in the game when you are dog tired! You will generate more power when you are tired if you have core strength.
One of the first signs of fatigue that I look for in an athlete is whether he or she can remain strong and upright towards the end of the game. If your core is weak, you will start to "bend over" and lose power and explosiveness when you run.