Background Change of direction (CoD) is associated with performance and injury in multidirectional sports. CoD consists of different phases (initial acceleration, deceleration, and re-acceleration) ...

Most American football fans have seen something like this before and grimaced: A running back, sprinting at breakneck speed down the field, makes a swift cut to evade a defender. But when all his ...

Several areas of investigation for deceleration of an interstellar probe have been identified and these include: Reverse engine thrust, solar sail, Magsail, Medusa sail, microwave sail, orbital ...

WHEN a champion sprinter falls short of his best speeds, it takes a while to determine whether he is temporarily on poor form or has permanently lost his edge. The same is true with emerging markets, ...