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The purpose of this study is to determinate whether the application of electric currents produce changes in the excitability of alpha moto neurone. Moreover evidence whether the effect of the electric currents can change the tone of the muscle under stimulation in healthy volunteers
In the last years several experimental studies have evidenced that the transcutaneous electric nerve stimulation (TENS) in peripheric application can cause a decrease of spasticity and modulation of H-reflexes.
But if the application is in the central nervous system the results are different. So the purpose of this study is quantify the modulation of the excitability of alpha moto neurone when the application of the current is in the central nervous system compared with a sham group.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 10 Kilohertz (KHz) | Experimental | Transcutaneous application of 10 Kilohertz (KHz) current over the back for a 40 minutes session. The intensity of the current will increase until participants report a "strong but comfortable" sensation, just below motor threshold. |
|
| Transcutaneous Electrical Stimulation | Experimental | Transcutaneous application of TENS current over the back for a 40 minutes session. The intensity of the current will increase until participants report a "strong but comfortable" sensation, just below motor threshold. Currents parameters are frequency 100 Hz and pulse width 100 microseconds |
|
| Sham stimulation | Sham Comparator | Electrodes are placed over the back for a 40 minutes in the same manner as experimental groups, but will be applied a sham electrical stimulation increasing the current intensity of an unconnected channel. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Transcutaneous Electrical Stimulation | Device | TENS transcutaneous electrical stimulation over the back the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Baseline H reflex | H-reflex data are obtained by EMG signal. The EMG electrode (SignalConditioningElectrodes v2.3, Delsys Inc., USA) is fixed on triceps surae by the SENIAM protocol (www.seniam.org). The stimulator electrode is fixed on the peroneus nerve, in the popliteal fossa. | baseline at 0 min. |
| During treatment H reflex | H-reflex data are obtained by EMG signal. The EMG electrode (SignalConditioningElectrodes v2.3, Delsys Inc., USA) is fixed on triceps surae by the SENIAM protocol (www.seniam.org). The stimulator electrode is fixed on the peroneus nerve, in the popliteal fossa. | During treatment at 33min. |
| Post treatment H reflex | H-reflex data are obtained by EMG signal. The EMG electrode (SignalConditioningElectrodes v2.3, Delsys Inc., USA) is fixed on triceps surae by the SENIAM protocol (www.seniam.org). The stimulator electrode is fixed on the peroneus nerve, in the popliteal fossa. | Immediately after treatment at 40 min. |
| Measure | Description | Time Frame |
|---|---|---|
| Baseline muscle tone | This outcome measure is obtained by a device named MyotonPro. It is a commercial device made to calculate myotonometrics properties of the muscle. It is a non-invasive method to calculate the muscle tone. The investigators obtained many parameters like muscle stiffness, frequency and decrement. | Baseline at 0 min. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Diego Serrano-Muñoz, MsC | Contact | 0034 925247700 | 783 | dserrarno@sescam.jccm.es |
| Julio GĂłmez-Soriano, PhD | Contact | 0034 925268800 | 5845 | julio.soriano@uclm.es |
| Name | Affiliation | Role |
|---|---|---|
| Diego Serrano-Muñoz, MsC | Hospital Nacional de Parapléjicos de Toledo | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Diego Serrano-Muñoz | Talavera de la Reina | Castille-La Mancha | 45600 | Spain |
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| ID | Term |
|---|---|
| D009128 | Muscle Spasticity |
| ID | Term |
|---|---|
| D009135 | Muscular Diseases |
| D009140 | Musculoskeletal Diseases |
| D009122 | Muscle Hypertonia |
| D020879 | Neuromuscular Manifestations |
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| ID | Term |
|---|---|
| D004561 | Transcutaneous Electric Nerve Stimulation |
| ID | Term |
|---|---|
| D004599 | Electric Stimulation Therapy |
| D013812 | Therapeutics |
| D026741 | Physical Therapy Modalities |
| D012046 | Rehabilitation |
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|
| 10Kilohertz (KHz) | Device | 10 KHz transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands) |
|
| Sham stimulation | Device | Sham transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands) |
|
| Muscle tone during treatment |
This outcome measure is obtained by a device named MyotonPro. It is a commercial device made to calculate myotonometrics properties of the muscle. It is a non-invasive method to calculate the muscle tone. The investigators obtained many parameters like muscle stiffness, frequency and decrement. |
| During treatment at 35 min. |
| Muscle tone post-treatment | This outcome measure is obtained by a device named MyotonPro. It is a commercial device made to calculate myotonometrics properties of the muscle. It is a non-invasive method to calculate the muscle tone. The investigators obtained many parameters like muscle stiffness, frequency and decrement. | Post-treatment at 42min |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D000698 |
| Analgesia |
| D000760 | Anesthesia and Analgesia |