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enhanced Zero-gravity Locomotion Simulator (eZLS)
Hardware Type
Exercise Equipment

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The enhanced Zero-g Locomotion Simulator (eZLS) is a newer generation of the device that was originally developed by Davis, et al. (1996) and is located at the NASA Glenn Research Center's Exercise Countermeasures Laboratory. The eZLS features an offloading subject suspension system to support a test subject in a supine position and a vertical treadmill. The treadmill has the capability to float in 1 degree-of-freedom on air bearings and interface to a ground reaction frame via variably-compliant isolators. The subject suspension system simulates a reduced gravity environment by completely or partially offloading the weight of the exercising test subject's head, torso, arms, and legs. The test subject is suspended from a freestanding truss superstructure which stands 6.1 m (20 ft.) from ground level. The subject can be suspended horizontally for zero-gravity simulations, or at the appropriate pitch angle for partial gravity simulations. The suspension system uses remote-operated motors which allow for adjustment of tension in the suspension system that supports the test subject and speeds the setup operation time.

Versions of this Hardware
+ Version Used During Ground-based Experiments