J. Sebastian Marquez

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In recent years, active prosthetic legs have been developed and deployed commercially that help amputees to initiate gait with less effort and more symmetry in the pattern. However, the process of initial set up and tuning is highly time and cost consuming. It requires prosthetic experts to observe the gait and the feedback from amputees to manually tune(More)
Lower limb amputees who wear a conventional passive prosthesis usually consume more metabolic energy than normal persons and may put more pressure on their knees, which eventually results in knee damage. In order to model the muscle activity during human gait, a simulated amputee walking on normal subjects was investigating by adding a 10 lbs. load on their(More)
Human gait is a complex process resulting from contraction of various muscle groups with different sizes. With the loss of a lower limb, amputees use passive prosthetics to replace the lost limb and regain function. Operating a prosthetic leg, requires more metabolic energy expenditure and greater pressure on the residual limb. In order to understand the(More)
1 Hunter Holmes McGuire VA Medical Center, Department of Veterans Affairs, Richmond, VA, United States, 2 Department of Electrical and Computer Engineering, Florida International University, Miami, FL, United States, 3 Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, United States, 4 Department of(More)
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