JRRD at a Glance ZeroG: Overground gait and balance training system

We present a new overground body-weight support (BWS) system called ZeroG that allows patients to practice gait, balance, and postural activities in a safe, controlled manner. The system can provide static or dynamic BWS, and because it is mounted overhead on a custom track, patients can practice walking on flat surfaces, rough terrain, and stairs. In addition, ZeroG uses an active trolley system that automatically follows patients as they walk. As a result, patients only feel the vertical unloading forces and very little horizontal forces. We believe training with ZeroG will allow patients the ability to practice activities that are critical to achieving functional independence at home and in the community. Retraining of interjoint arm coordination after stroke using robot-assisted time-independent functional training Elizabeth B. Brokaw, MS, et al.