Figure 4. Sagittal deceleration task vs lateral plyometric task.

The resultant ground reaction force during a sagittal plane deceleration task (top sequence from left to right) places a large amount of load on the knee and quadriceps tendon, whereas a lateral plyometric task places more relative load proximally on the lateral hip and trunk (bottom sequence from left to right). Red arrows, resultant ground reaction force-vector; white lines, depiction of joint angels; asterisks, area of high load-demand during task.