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Breathing-controlled Electrical Stimulation (BreEStim) for Management of Neuropathic Pain and Spasticity
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Walking after partial paralysis assisted with EMG-triggered or switch-triggered functional electrical

Anirban Dutta1, Rudi Kobetic, Ronald Triolo

  • 1Universitätsklinikum, Georg-August-Universität, Goettingen, Germany. adutta@ieee.org

IEEE ... International Conference on Rehabilitation Robotics : [Proceedings]
|January 26, 2012
PubMed
Summary

Functional Electrical Stimulation (FES) with electromyogram-based triggering requires less user effort for individuals with spinal cord injuries compared to manual switch triggering. EMG-triggering improved gait parameters and reduced reliance on external support.

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Area of Science:

  • Neuroscience
  • Rehabilitation Engineering
  • Biomechanics

Background:

  • Functional Electrical Stimulation (FES) is a key technology for restoring ambulation in individuals with paralysis.
  • Existing FES systems often rely on manual switch triggers, which may increase user effort and limit natural gait.
  • Electromyogram (EMG)-based event detection offers a potential alternative for more intuitive FES control.

Observation:

  • Two subjects with incomplete spinal cord injuries (iSCI) participated in a study comparing manual switch-triggering and EMG-triggering for FES-assisted walking.
  • Gait kinematics, kinetics, and walker support were analyzed under both triggering conditions.
  • Significant differences in double support duration, ground reaction forces, and walker support were observed between the two triggering methods.

Findings:

  • EMG-triggered FES resulted in significantly shorter double support durations for one subject (p<0.05).
  • Both subjects exhibited significantly higher average normal ground reaction forces with EMG-triggering (p<0.05).
  • One subject required significantly less body weight support on the walker with EMG-triggering (p<0.05).

Implications:

  • EMG-triggered FES may lead to more efficient and less demanding walking for individuals with iSCI.
  • This technology could enhance user independence and reduce the physical burden associated with FES-assisted ambulation.
  • Further research is warranted to explore the long-term benefits and broader applicability of EMG-triggered FES systems.