Muscle Synergy-Based Functional Electrical Stimulation Reduces Muscular Fatigue in Post-Stroke Patients: A Systematic Comparison
Muscle Synergy-Based Functional Electrical Stimulation Reduces Muscular Fatigue in Post-Stroke Patients: A Systematic Comparison
Blog Article
Muscle synergy-based functional electrical stimulation had improved movement kinematics instantly and in long-term use in post-stroke patients.However, the therapeutic benefits and efficacy of muscle synergy-based functional electrical stimulation patterns over traditional stimulation patterns need exploration.This paper presents the therapeutic benefits of muscle synergy-based functional electrical stimulation compared to traditional stimulation patterns from the perspective of muscular fatigue and kinematic performance produced.Three stimulation waveforms/envelopes: customized rectangular, trapezoidal, and muscle synergy-based FES patterns were administered on six healthy and six post-stroke patients to achieve full elbow flexion.
The muscular fatigue was measured through evoked-electromyography, and the kinematic outcome was measured through angular displacement during elbow flexion.The time domain (peak-to-peak amplitude, mean absolute value, root-mean-square) and frequency here domain (mean frequency, median frequency) myoelectric indices of fatigue were calculated from evoked-electromyography.Myoelectric indices of fatigue and peak angular displacements of elbow joint were compared across waveforms.The presented study found that the muscle synergy-based stimulation pattern sustained the kinematic output for longer durations and induced less muscular fatigue followed by trapezoidal and customized rectangular patterns in healthy and post-stroke participants.
These findings imply that the therapeutic effect of muscle synergy-based functional electrical stimulation stems from not only being turbo air m3f72-3-n biomimetic but also due to it being efficient in inducing less fatigue.The slope of current injection was a crucial factor in determining the performance of muscle synergy-based FES waveforms.The presented research methodology and outcomes would help researchers and physiotherapists in choosing effective stimulation patterns for maximizing post-stroke rehabilitation benefits.Note: FES waveform/ pattern/ stimulation pattern all refers to FES envelop in this paper.