A method and device for use in plyometric muscular training is provided. In a first version, a rigid frame is provided having a trainee's position, a pair of cables and a weighted bar. The cables are positioned between the trainee's position and the bar. Each cable is attached at an upper location and a forward location of the frame. The cables partially constrain the movement of the bar and restrain the bar from striking sections of the trainee's body. The trainee may explosively push or throw the bar away from the trainee's position and towards the cable attachment locations, wherein the bar is released from the trainee's grasp. The return pathway of the bar is determined by the force of gravity, the force provided by the trainee and the constraints of the cables. The cables reduce the risk of injury to the trainee.