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) ...

Acceleration and Deceleration Test - 4x4 Of The Year 2009 Video 4x4 Of The Year 2009 is here at last! Watch as we test how quickly our group of competitors can get through the ¼ mile and how quickly ...