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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Gait Posture. 2011 Jan 26;33(3):429–435. doi: 10.1016/j.gaitpost.2010.12.019

Figure 1.

Figure 1

Figure 1a. Setup showing LMMS treatment. Coupling spring attached to bottom surface of vibration platform provides a load of 60% of the subjects’ pre-bed rest body weight via a shoulder harness. The subject pushes on the plate with straight legs, in a “relaxed stance,” for 10 minutes while the platform provides a 30 Hz, 0.3g sinusoidal acceleration along the their load bearing axis.

Figure 1b. Surface acceleration of the top platen of the vibration device during subject treatment with 60% body weight, showing 0.3g peak to peak acceleration. A closed loop feedback control system built into the platform uses a build in accelerometer to automatically adjust the electrical drive signal to the actuator to provide a consistent, high-fidelity sinusoidal acceleration/deceleration for subject of various heights and weights.