Two types of plyometric movement to train power for sports requiring trunk rotation and/or midline control. The term "power" has different meanings depending on the context, but technically it refers to the RATE of doing work, or force x velocity. # Working on this velocity component during training enhances the speed of athletic movements performed during sport. Plyometric exercises focus on the stretch-shortening cycle of muscle contractions in which muscles rapidly lengthen followed by an explosive contraction. # A fast eccentric phase of a movement (me rotating away from the wall) and minimizing the amortization phase (when a muscle switches from eccentric to concentric) helps train for a faster, more explosive rotation as I slam the medicine ball into the wall. # The plyometric landmine rotation drill in tall-kneeling operates in a similar fashion but may have more utility as a core exercise in which the trunk must stabilize itself against anti-rotational movements in both directions.