Modulation of H-reflex After Application of Electric Currents in Healthy People

Modulation of H-reflex After Application of Electric Currents in Healthy People. Effects on Myotonometer Properties.A Pilot Study

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.

Inclusion Criteria:

• Participants will be volunteer healthy students of Physiotherapy, University of Castilla - La Mancha, older than 18 years.

Exclusion Criteria:

• Neuromuscular disease
• Epilepsy
• Trauma, surgery or pain affecting the upper limb, shoulder girdle or cervical area
• 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
• Sensitivity disturbance in lower limb