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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
30
TENS transcutaneous electrical stimulation over the back the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)
10 KHz transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)
Sham transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)
Diego Serrano-Muñoz
Talavera de la Reina, Castille-La Mancha, Spain
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.
Time frame: 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.
Time frame: 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.
Time frame: Immediately after treatment at 40 min.
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.
Time frame: Baseline at 0 min.
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.
Time frame: During treatment at 35 min.
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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.
Time frame: Post-treatment at 42min