A free-motion dynamic resistance trainer to be used to train the muscular coordination, dynamic stability and gait mechanics of athletes and physical therapy patients. Adjustable tension shock cords or bungee cords and resistance tubing are used in conjunction with a spinal support harness and jib in order to allow for the adjustment of progressive resistance and to create a heightened sense of proprioceptive awareness in those muscles and joints that are meant to be targeted depending upon the particular movement pattern being exercised. While providing resistance to improve strength and stamina, the shock cords or bungee cords and resistance tubing simultaneously guide and assist the trainee through certain aspects of each movement in order to train muscle memory of the proper kinetic sequence and body positioning. The apparatus, which is meant to be worn, can be used during sport specific movements other than running, in order to train and improve performance in myriad sports and activities.