To date, no intervention has demonstrated efficacy for improving walking while minimizing fall risk. BWTraining may be a simple and effective intervention to achieve both goals. In the investigators' recent randomized controlled pilot trial (RCT), individuals with sub-acute stroke who participated in a BWTraining demonstrated 3-fold improvement in backward and forward walking speed and fall self-efficacy. Further, BWTraining caused 75% greater improvement in balance versus those in a dose-matched balance training group. At the 3-month follow-up assessment, BWSpeed of the BWTraining group averaged 0.63 m/s, exceeding the threshold for fall risk in elderly adults.