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Updated: Jun 10, 2026
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Paradigms of Lower Extremity Electrical Stimulation Training After Spinal Cord Injury
Published on: February 1, 2018
Distributed low-frequency functional electrical stimulation delays muscle fatigue compared to conventional
Nebojsa M Malesević1, Lana Z Popović, Laszlo Schwirtlich
1Faculty of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, 11000 Belgrade, Serbia. nebojsa.malesevic@etf.bg.ac.rs
Muscle & Nerve
|July 29, 2010
Summary
Low-frequency stimulation using multi-pad electrodes can delay muscle fatigue. High pulse-rate (HPR) therapy enhances muscle training, while low pulse-rate (LPR) stimulation is better for prolonged use, reducing fatigue.
Area of Science:
- Neurology
- Rehabilitation Medicine
- Biomedical Engineering
Background:
- Muscle fatigue is a significant challenge in rehabilitation for individuals with paralysis.
- Electrical stimulation is a potential method to enhance muscle function and endurance.
Purpose of the Study:
- To compare two low-frequency electrical stimulation protocols for delaying muscle fatigue in paraplegics.
- To evaluate the effectiveness of high pulse-rate (HPR) versus low pulse-rate (LPR) stimulation on quadriceps muscle endurance and force.
Main Methods:
- Two stimulation protocols were applied to the quadriceps muscles of paraplegics over 20 days: high pulse-rate (HPR) with a large cathode at 30 Hz and low pulse-rate (LPR) with four smaller cathodes at 16 Hz.
- Knee-joint torque was measured pre- and post-therapy to assess changes in muscle endurance.
Main Results:
- High pulse-rate (HPR) therapy resulted in greater increases in muscle endurance and force during prolonged training.
- Low pulse-rate (LPR) stimulation produced less muscle fatigue compared to the HPR stimulation.
Conclusions:
- HPR stimulation is favored for muscle training and enhancing force.
- LPR stimulation is better suited for prolonged stimulation to minimize muscle fatigue.
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