Technological framework of the multidirectional gravity-assist

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Fig. 1. Technological framework of the multidirectional gravity-assist. Technological framework of the multidirectional gravity-assist. (A) Schematic and image of the robotic support system, including the directions of the actuated and passive (rotation) degrees of freedom. The spatial trajectory and instantaneous speed of the CoM are shown during locomotion within the entire workspace. Images (1 to 4) illustrating the recovery from a fall. (B) Kinematics, electromyogram (EMG) activity, and GRFs are recorded concomitantly. A gait sequence is shown, during which an upward force followed by an increasing forward force are applied to a healthy subject during walking. From top to bottom: Desired forces, measured forces, left and right stance durations, leg joint angles, EMG activity, vertical GRFs, and timing of applied forces. Jean-Baptiste Mignardot et al., Sci Transl Med 2017;9:eaah3621 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works