Swing training assembly for swing sports including golf, baseball, tennis or hockey

A swing training assembly includes a shuttle, a shuttle travel track, a tensioner, a shuttle displacement line and a shuttle pulley. The shuttle resides in the shuttle travel track and the shuttle pulley and shuttle displacement line are adapted to linearly displace the shuttle to different shuttle positions within the shuttle travel track in response to displacement forces applied to the shuttle pulley by a user pulling on the shuttle displacement line. The tensioner provides an opposing counter-force to control the rate of shuttle displacement. The swing training assembly may also include body positioning limits to maintain proper body alignment while the user pulls on the shuttle displacement line.