Neuromechanical adaptations to real-time biofeedback of the center of pressure during human walking

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  • March 20, 2019
Creator
  • Browne, Michael
    • Affiliation: School of Medicine, UNC/NCSU Joint Department of Biomedical Engineering
Abstract
  • The purpose of this study was to understand the effects of adjustments to the center of pressure (COP) via real-time visual biofeedback on joint loading in the frontal and sagittal planes while walking. Eight subjects walked on an instrumented treadmill while provided bilateral targets for toe-off on a visual display alongside real-time COP trajectories. Toe-off targets included a neutral location along with medial, lateral, anterior and posterior shifts. Resultant COP shifts caused compensations in joint mechanics; anteriorly/posteriorly shifted COP, was achieved by velocity changes to COP progression, and lead to increases/decreases in plantarflexor angle and reductions in hip extension moment while laterally/medially shifted COP, was achieved through spatial changes to COP progression, lead to increases/decreases in both peak inversion ankle angle and moment. Temporal modifications to peak muscle activities drove mechanical changes. Results suggest that COP biofeedback could be a useful tool or shaping joint kinematics/kinetics during functional locomotion tasks.
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  • In Copyright
Advisor
  • Sawicki, Gregory
  • DiMeo, Andrew
  • Franz, Jason
Degree
  • Master of Science
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2016
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