Average of self-selected, fast walking velocities, 6 minute walking distance pre, post 6 weeks of robotic treadmill training and 8 weeks after the end of treadmill training, i.e., follow up. A. overground walking speed for participants from the resistance treadmill training group; B. overground walking speed for participants from the assistance treadmill training group; C. 6 minute walking distance for participants from the resistance training group; D. 6 minute walking distance for participants from the assistance training group. Three trials were tested for walking speed and averaged across participants for each group. Error bars indicate standard deviation of each gait parameter. SSV, self-selected velocity; FV, fast velocity. * indicates significant difference, p < 0.05.