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Gait planning and double support phase model for functional electrical stimulation-based walking.

Nitin Sharma1, Richard Stein

  • 1Department of Physiology, University of Alberta, Edmonton ALB T6G2E1 Canada. nitin.sharma@ualberta.ca

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|February 1, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed new mathematical models for paraplegic walking using functional electrical stimulation (FES) and braces. These models better represent FES walking by minimizing muscle activation and arm forces.

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Area of Science:

  • Biomechanics
  • Robotics
  • Rehabilitation Engineering

Background:

  • Able-bodied walking trajectories are standard references for paraplegic walking restoration.
  • Existing models often fail to capture the nuances of assisted walking methods.
  • Functional electrical stimulation (FES) and bracing offer potential for restoring gait in individuals with paraplegia.

Purpose of the Study:

  • To compute lower limb segment angle trajectories for FES and brace-assisted walking.
  • To develop mathematical models that incorporate double and single support phases of gait.
  • To design optimized walking trajectories minimizing muscle activation and arm reaction forces.

Main Methods:

  • Development of simple mathematical models for FES and brace-based walking.
  • Incorporation of double and single support gait phases into the models.
  • Application of dynamic optimization to minimize muscle activations and arm reaction forces.

Main Results:

  • Computed lower limb segment angle trajectories for novel walking assistance methods.
  • Models demonstrated improved representation of FES-based walking compared to voluntary trajectories.
  • Optimization successfully reduced muscle activations and arm reaction forces.

Conclusions:

  • The developed mathematical models provide a more accurate representation of FES and brace-assisted walking.
  • Dynamic optimization is effective in designing efficient and less strenuous walking trajectories for paraplegia.
  • These findings contribute to advancing gait restoration technologies for individuals with lower limb impairments.