The training programme included treadmill walking, standing balance exercises (crouching to pick up objects placed at the limit of stability), walking up and down ramps and stairs. Strength training was carried out as closed-chain exercise, with practice of forward and lateral step-ups and step-downs, sit-to-stands, leg press exercises, and heels raise and lower over a block. Exercises were performed intensively to an individualized maximum number of repetitions in order to promote motor learning and improve muscle strength and endurance