20-kHz alternating current stimulation: effects on motor and somatosensory thresholds

High frequency alternating current (HFAC) stimulation have been shown to produce a peripheral nerve conduction block. Currently, all the studies applying HFAC stimulation in clinical studies, have employed frequencies below 10 kHz. The main aim of this work was to investigate the neuromodulatory eff...

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Bibliographic Details
Published in:Journal of neuroengineering and rehabilitation 2020-02, Vol.17 (1), p.22-22, Article 22
Main Authors: Serrano-Muñoz, Diego, Avendaño-Coy, Juan, Simón-Martínez, Cristina, Taylor, Julian, Gómez-Soriano, Julio
Format: Article
Language:English
Subjects:
Alternating current
Care and treatment
Clinical trials
Electric currents
Electrical stimuli
Electrodes
Health aspects
High-frequency
Hyperactivity
Intervention
Medical research
Methods
Muscle contraction
Nerve block
Nerve conduction
Nervous system diseases
Neurological diseases
Pain
Patient outcomes
Peripheral nerve
Peripheral nerves
Physiological aspects
Software
Somatosensory system
Statistical analysis
Stimulation
Studies
Thresholds
Transcutaneous electric stimulation
Transcutaneous electrical nerve stimulation
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Summary:High frequency alternating current (HFAC) stimulation have been shown to produce a peripheral nerve conduction block. Currently, all the studies applying HFAC stimulation in clinical studies, have employed frequencies below 10 kHz. The main aim of this work was to investigate the neuromodulatory effect of transcutaneous 20 kHz stimulation on somatosensory and pain thresholds, and maximal handgrip strength. A randomized, crossover, single-blinded, placebo-controlled trial was conducted following recruitment of fourteen healthy volunteers. Transcutaneous stimulation at 20 kHz and sham stimulation were applied over the ulnar and median nerves of fourteen healthy volunteers for 20 min. Maximal handgrip strength (MHS), mechanical detection threshold (MDT) and pressure pain threshold (PPT) were registered prior to, during (15 min), immediately after the end (20 min), and 10 min following stimulation. The 20 kHz stimulation showed a lower MHS during the stimulation at the 15 min (30.1 kgs SE 2.8) and at 20 min (31.8 kgs, SE 2.8) when compared to sham stimulation (35.1 kgs, SE 3.4; p 
ISSN:1743-0003
1743-0003
DOI:10.1186/s12984-020-00661-x