This exercise will let you use OpenSim to design and evaluate devices to assist locomotion. You will work with a simplified model of the musculoskeletal system and a simulation of a typical, unloaded gait. You will learn how to generate muscle-driven simulations with and without simple passive and active assistive devices and analyze how these devices affect the metabolic cost of walking. You can get started at the following link.

https://simtk-confluence.stanford.edu:8443/display/OpenSim/Simulation-Based+Design+to+Reduce+Metabolic+Cost

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