A wheeled walker for training an individual to walk by enabling hip flexion. The walker is equipped with a pulley located between two anchors points to which the ends of an elastic cord are attached a middle portion of the elastic cord runs over the pulley. A first harness for receiving a foot of the user is slidingly coupled to the segment of the elastic cord located between the first anchor point and the pulley. A similar harness for receiving the other foot of the user is slidingly coupled to the segment of the elastic cord located between the second anchor point and the pulley.