Doscher writes that to lessen the braking effect of the foot when runners step on the ground, they should have their knees slightly bent when doing so. In "Sprinting," author Ryan McGill says the ...

Overland Park? Sprint Corp. chairman William T. Esrey stepped down Tuesday, handing the leadership position he had for more than a decade to new chief executive Gary Forsee, the company announced.

However, the particular phase of the sprinting gait cycle at which hamstring injury occurs remains a debated topic. Video footage and athlete anecdotes have contributed to the discussion, but do not ...