- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04884932
Percutaneous High Frequency Alternating Current Stimulation in Healthy Volunteers With 30kHz
Percutaneous High Frequency Alternating Current Stimulation: Effects on Somatosensory and Motor Threshold in Healthy Volunteers With 30 kHz
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The previous studies with transcutaneous and percutaneous HFAC, suggest high-frequency stimulation (10 and 20 kHz) have an inhibitory effect over muscle strength and somatosensory threshold.
However, the 30 kHz frequency has never been applied, and the hypothesis is that it can produce a greater blockage at the sensitive level and be a more comfortable application for the patient. The purpose of the present work is to determine if a greater blockage of the sensory component of the nerve occurs with this frequency and is to reduce the amount of current intensity needed using a percutaneous approach by apply two acupuncture needles near the nerve as electrodes.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Toledo, Spain, 45071
- Castilla-La Mancha University
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Healthy volunteers
- Ability to perform all clinical tests and understand the study process, as well as obtaining informed consent.
- Tolerance to the application of electrotherapy.
- That they have not diagnosed any pathology.
- They do not present a contraindication to puncture and / or the application of electric currents.
Exclusion Criteria:
- Neuromuscular disease.
- Epilepsy.
- Trauma, surgery or pain affecting the upper limb
- Osteosynthesis material in the upper limb.
- Diabetes.
- Cancer.
- Cardiovascular disease.
- Pacemaker or other implanted electrical device.
- Take any drug (NSAIDs, corticosteroids, antidepressants, analgesics, antiepileptics, ...) during the study and in the previous 7 days.
- Presence of tattoos or other external agent introduced into the treatment or assessment area.
- Pregnancy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: 30 kHz stimulation
Percutaneous application of high frequency electrical current at 30 kHz over the median nerve for a 20 minutes session.
The intensity of the current will increase until participants report a "strong but comfortable" sensation, just below motor threshold.
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A charge-balanced, symmetric, biphasic sinusoidal current without modulation will be delivered at a frequency of 30 kHz.
The stimulation intensity will be defined as that sufficient to produce a "strong but comfortable" sensation, just below motor threshold, over the median nerve through the electrotherapy device Myomed 932.
(Enraf-Nonius, Delft,Netherlands)
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Experimental: Sham stimulation
Electrodes are placed over the median nerve for 20 minutes in the same manner as experimental group but will be applied a sham electrical stimulation increasing the current intensity during the first 30 seconds.
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Sham stimulation will be delivered at a frequency of 30 kHz only during the first 30 seconds.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Tactile Threshold
Time Frame: Baseline at 0 minutes
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The tactile threshold will be measured with Von Frey filaments and will be expressed in millinewton
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Baseline at 0 minutes
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Pressure Pain Threshold
Time Frame: Baseline at 0 minutes
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The PPT will be measured with an algometer and will be expressed in Newtons
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Baseline at 0 minutes
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Muscle strength
Time Frame: Baseline at 0 minutes
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Muscle strength will be measured with a dynamometer and will be expressed in Kgs.
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Baseline at 0 minutes
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Tactile Threshold
Time Frame: During treatment at 15 minutes
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The tactile threshold will be measured with Von Frey filaments and will be expressed in millinewton
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During treatment at 15 minutes
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Pressure Pain Threshold
Time Frame: During treatment at 15 minutes
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The PPT will be measured with an algometer and will be expressed in Newtons
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During treatment at 15 minutes
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Tactile Threshold
Time Frame: Immediately after treatment at 20 minutes
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The tactile threshold will be measured with Von Frey filaments and will be expressed in millinewton
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Immediately after treatment at 20 minutes
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Pressure Pain Threshold
Time Frame: Immediately after treatment at 20 minutes
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The PPT will be measured with an algometer and will be expressed in Newtons
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Immediately after treatment at 20 minutes
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Muscle strength
Time Frame: Immediately after treatment at 20 minutes
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Muscle strength will be measured with a dynamometer and will be expressed in Kgs.
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Immediately after treatment at 20 minutes
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Tactile Threshold
Time Frame: Immediately after treatment at 30 minutes
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The tactile threshold will be measured with Von Frey filaments and will be expressed in millinewton
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Immediately after treatment at 30 minutes
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Pressure Pain Threshold
Time Frame: Immediately after treatment at 30 minutes
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The PPT will be measured with an algometer and will be expressed in Newtons
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Immediately after treatment at 30 minutes
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Muscle strength
Time Frame: Immediately after treatment at 30 minutes
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Muscle strength will be measured with a dynamometer and will be expressed in Kgs.
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Immediately after treatment at 30 minutes
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Latency of Antidromic median sensory nerve action potential
Time Frame: Baseline at 0 minutes
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The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Latency will be registered with a specific software (Signal software, CED) and will be expressed in millisecond.
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Baseline at 0 minutes
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Amplitude of Antidromic median sensory nerve action potential
Time Frame: Baseline at 0 minutes
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The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Peak-to-peak amplitude (PPA) will be registered with a specific software (Signal software, CED) and will be expressed in millivolts.
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Baseline at 0 minutes
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Latency Antidromic median sensory nerve action potential
Time Frame: Immediately after treatment at 20 minutes
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The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Latency (NPL) will be registered with a specific software (Signal software, CED) and will be expressed in millisecond.
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Immediately after treatment at 20 minutes
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Amplitude Antidromic median sensory nerve action potential
Time Frame: Immediately after treatment at 20 minutes
|
The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Peak-to-peak amplitude (PPA) will be registered with a specific software (Signal software, CED) and will be expressed in millivolts.
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Immediately after treatment at 20 minutes
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Latency Antidromic median sensory nerve action potential
Time Frame: Immediately after treatment at 30 minutes
|
The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Latency will be registered with a specific software (Signal software, CED) and will be expressed in millisecond.
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Immediately after treatment at 30 minutes
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Amplitude Antidromic median sensory nerve action potential
Time Frame: Immediately after treatment at 30 minutes
|
The recording electrodes were placed on the second finger and the stimulus will be applied on the median nerve (above the elbow joint).
The stimulus will consist of a train of 10 pulses (100 μs width), applied at supramaximal stimulation, presented at 1 Hz (DS7A, Digitimer Ltd).
Peak-to-peak amplitude (PPA) will be registered with a specific software (Signal software, CED) and will be expressed in millivolts.
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Immediately after treatment at 30 minutes
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Baseline nerve temperature
Time Frame: Baseline at 0 minutes, at 15 minutes, immediately after treatment at 20 minutes, and immediately after treatment at 30 minutes
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Nerve temperature will be measured using a termodoppler (Celsius degrees)
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Baseline at 0 minutes, at 15 minutes, immediately after treatment at 20 minutes, and immediately after treatment at 30 minutes
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Numerical Discomfort Rate Score
Time Frame: After the intervention at 35 minutes
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the possible discomfort caused by the interventions will be assess by a numerical rate score.
The NRS consists of a scale from 0 (no discomfort) to 10 (worst possible discomfort)
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After the intervention at 35 minutes
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Numerical Pain Rate Score
Time Frame: After the intervention at 35 minutes
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The NRS consists of a scale from 0 (no pain) to 10 (worst possible pain)
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After the intervention at 35 minutes
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Number of participants with intervention-related adverse effects
Time Frame: After the intervention at 35 minutes
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The possible adverse effects caused by the interventions will be assess by a closed questionnaire, where the presence of any adverse effect would be qualified as 1 point and the negative presence of adverse effect as 0 point.
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After the intervention at 35 minutes
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Blinding success
Time Frame: After the intervention at 35 minutes
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Blinding of subjects and researchers will be assessed using the Bang questionary.
It will be the question after the intervention, "What type of treatment do you think you have received?"
Will be asked, with 5 items: (1) "I firmly believe that I have received an experimental treatment"; (2) "I slightly believe that I have received an experimental treatment"; (3) "I strongly believe that I have received a placebo"; (4) "I slightly think I have received a placebo"; (5) "Don't know, don't answer.",
Index where -1 is blinded and 1 is unblinded.
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After the intervention at 35 minutes
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Collaborators and Investigators
Sponsor
Investigators
- Study Director: Juan Avendaño-Coy, PhD, Castilla-La Mancha University
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- Neuromodest-pHFAC30
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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