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The purpose of this study is demonstrate the importance of density current of TENS in the effect about H-reflex in healthy volunteers.
TENS have been used to treatment against pain and reflex modulation. However, the most part of evidence do not show the current density. This parameter has been demonstrated like a important factor in the effect of the current about the outcome measures.
This study show the difference between the same subjective sensation "strong but comfortable" in current density and the relation with the effect about H-reflex.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Transcutaneous nerve 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. |
|
| 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 |
|---|---|---|---|---|
| TENS | Device | TENS transcutaneous electrical stimulation over back through 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 |
|---|---|---|
| Change Current Density | Current density (mA/cm2) is obtained by a mathematical operation. It is the result of the quotient between the current intensity by the area of the electrodes (in this case 45cm²). | At 1 min. treatment session, at 40 min. treatment session |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Diego Serrano-Muñoz, MsC | Hospital Nacional de Parapléjicos de Toledo | Principal Investigator |
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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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| Sham stimulation | Device | Sham transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands) |
|
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D000698 |
| Analgesia |
| D000760 | Anesthesia and Analgesia |