Do world-class sprinters really move their legs no faster than ordinary runners?

The speeds attained by world-class sprinters like Usain Bolt are simply unfathomable to me. During today’s workout, I ran at nearly top speed for a set of 400-meter repetitions: About a 6-minute-mile pace, or 10 miles per hour. Sure, I could probably hit 15 mph over 50 meters or so, but that would be about […]