A new approach to retrain gait in stroke patients through body weight support and treadmill stimulation

Background and Purpose-A new gait training strategy for patients with stroke proposes to support a percentage of the patient's body weight while retraining gait on a treadmill. This research project intended to compare the effects of gait training with body weight support (BWS) and with no body weight support (no-BWS) on clinical outcome measures for patients with stroke, Methods-One hundred subjects with stroke were randomized to receive one of two treatments while walking on a treadmill: 50 subjects were trained to walk with up to 40% of their body weight supported by a BWS system with overhead harness (BWS group), and the other 50 subjects were trained to walk bearing full weight on their lower extremities (no-BWS group). Treatment outcomes were assessed on the basis of functional balance, motor recovery, overground walking speed, and overground walking endurance. Results-After a 6-week training period, the BWS group scored significantly higher than the no-BWS group for functional balance (P=0.001), motor recovery (P=0.001), overground walking speed (P=0.029), and overground walking endurance (P=0.018), The follow-up evaluation, 3 months after training, revealed that the BWS group continued to have significantly higher scores for overground walking speed (P=0.006) and motor recovery (P=0.039), Conclusions-Retraining gait in patients with stroke while a percentage of their body weight was supported resulted in better walking abilities than gait training while the patients were bearing their full weight. This novel gait training strategy provides a dynamic and integrative approach for the treatment of gait dysfunction after stroke.