I ran (ha!) across this article by Sam Wuest, thanks to the Steve Morris Facebook page. It’s a really interesting look at how Usain Bolt is the fastest man alive despite not conforming to accepted wisdom on running mechanics.
It turns out Mr Bolt makes clever use of waist rotation when he runs, in contrast to the normal admonitions to reduce rotational movement and increase forward and back movement you’ll get from a lot of running coaches. By turning his waist in coordination with the running motion Mr Bolt is creating a longer lever to the floor, and everybody knows that longer levers create more power than shorter levers over the same distance.
There’s a famous line in the Tai Chi Classics that goes “The waist is like the axle and the ch’i is like the wheel“. At one point in the article, Sam Wuest says
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