Importance of the Current Density in TENS

University of Castilla-La Mancha20 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Spasticity

Interventions

TENSDEVICE

TENS transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Sham stimulationDEVICE

Sham transcutaneous electrical stimulation over back through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Eligibility

Sex: ALLMin age: 18 YearsMax age: 60 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Outcomes

Primary Outcomes

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

Time frame: During treatment at 33min.

Post-treatment H reflex

Time frame: Immediately after treatment at 40 min.

Secondary Outcomes

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).

Time frame: At 1 min. treatment session, at 40 min. treatment session

Data from ClinicalTrials.gov

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