Designed by an PhD. PT for Exceptional Hip, Groin and Core Stabilization Stabilization - Unique weight bearing exercises for upper and lower body applications.Rotational Discs - Discs allow dynamic movement patterns and provide a friction - free environment that encourages muscle development while decreasing torque at the knee.Functional Training - Training for all levels of clients from professional athletes to recent hip replacement patients.This versatile product allows you to do rehabilitation, general fitness cross-training and dance specific exercises. Resistance cords may be added from either end to assist or resist the forces of gravity on the user.