I have no connection or experience with Kat walk [1], but it seems able to support a human (see video of sitting). That support might take care of your (rightfu

I have no connection or experience with Kat walk [1], but it seems able to support a human (see video of sitting). That support might take care of your (rightful) concern for joint health. (1) https://www.kickstarter.com/projects/katvr/kat-walk-a-new-virtual-reality-locomotion-device