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ZeroG: Overground gait and balance training system

Joseph Hidler, PhD, et al.

Figure 3. Free-body diagram on plate 2 connected to patient. Spring forces (Fs) and friction forces (Ff) resist motion because of rope forces (Fr). +X = along positive x-axis.

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.

Volume 48 Number 4, 2011
   Pages 287  — 298

View HTML ¦ View PDF ¦ Contents Vol. 48, No. 4
This article and any supplementary material should be cited as follows:
Hidler J, Brennan D, Black I, Nichols D, Brady K, Nef T. ZeroG : Overground gait and balance training system. J Rehabil Res Dev. 2011;48(4):287-98.
DOI:10.1682/JRRD.2010.05.0098
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Last Reviewed or Updated  Monday, May 9, 2011 3:00 PM

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