(CBS News) NEW YORK - At the World Track and Field Championships in Moscow on Saturday, Usain Bolt ... Virginia's SPEED clinic, Max Prokopy studies what makes elite runners like Bolt so fast.

Usain Bolt is faster than every one of ... winter to develop power and increase explosiveness,” says Bolt. Lower yourself into a squat position with your feet shoulder-width apart.

seconds till the stadium goes dead quiet and Usain ... squat, muscular frame forward, trying to stay with his mentor and the guy he beat in both sprints at the Jamaican trials. But at 50 meters ...