US 11,957,954 B2
Gait data collection and analytics system and methods for operating unweighting training systems
Charles D. Remsberg, Mountain View, CA (US); David E. Lieberman, Tracy, CA (US); and Michael P. Arnold, Modesto, CA (US)
Assigned to AlterG, Inc., Fremont, CA (US)
Appl. No. 16/756,860
Filed by ALTERG, INC., Fremont, CA (US)
PCT Filed Oct. 18, 2018, PCT No. PCT/US2018/056597
§ 371(c)(1), (2) Date Apr. 17, 2020,
PCT Pub. No. WO2019/079655, PCT Pub. Date Apr. 25, 2019.
Claims priority of provisional application 62/574,138, filed on Oct. 18, 2017.
Prior Publication US 2021/0187347 A1, Jun. 24, 2021
Int. Cl. A61H 1/02 (2006.01); A61B 5/11 (2006.01); A61H 3/00 (2006.01); A63B 22/00 (2006.01); A63B 22/02 (2006.01); A63B 71/06 (2006.01)
CPC A63B 22/02 (2013.01) [A61B 5/112 (2013.01); A61B 5/1123 (2013.01); A61H 1/0229 (2013.01); A61H 3/008 (2013.01); A63B 22/0023 (2013.01); A63B 71/0622 (2013.01); A61H 2201/5007 (2013.01); A61H 2201/5061 (2013.01); A61H 2201/5071 (2013.01); A63B 2071/065 (2013.01); A63B 2220/17 (2013.01); A63B 2220/18 (2013.01); A63B 2220/52 (2013.01); A63B 2225/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of calibrating an unweighting system for a user, comprising:
coupling a user to an unweighting system;
unweighting the user using the unweighting system to an initial unweighting condition;
increasing a speed of a moving belt of a treadmill in the system such that the user is walking within a chamber while the user is being unweighted by air pressure in the chamber;
obtaining electronic signals from a first load cell and a second load cell for the user at the initial unweighting condition;
increasing the amount of unweighting of the user to a first unweighting level above the initial unweighting condition;
obtaining electronic signals from the first load cell and the second load cell for the user at the first unweighting level above the initial unweighting condition;
increasing the amount of unweighting of the user to a second unweighting level above the initial unweighting condition;
obtaining electronic signals from the first load cell and the second load cell for the user at the second unweighting level above the initial unweighting condition;
increasing the amount of unweighting of the user to a third unweighting level above the initial unweighting condition;
obtaining electronic signals from the first load cell and the second load cell for the user at the third unweighting level above the initial unweighting condition; and
generating a user specific calibration curve for unweighting the user based on the electronic signals from the first load cell and the second load cell for the user at the initial unweighting condition and including the first, the second, and the third unweighting levels above the initial unweighting condition.