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Effects of TENS and IES on the Autonomous Balance of Normotens Volunteers and Hypertensive Patients

NCT03258489 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2019-12-11

No results posted yet for this study

Summary

Hypertension is considered a serious public health problem. The imbalance in autonomic nervous system (ANS) activity is one of the main triggers in the development and maintenance of hypertension. The non-pharmacological management of this disease is an important resource, especially in refractory hypertensive patients or in hypertensive crises, where the pharmacological treatment does not present an efficient response. It is known that transcutaneous electrical nerve stimulation (TENS) is capable of modifying the autonomic balance, however, the effects of Interferential electrical stimulation (IES) on this system in normotensive and hypertensive volunteers are not yet known. These electrotherapeutic resources may be a non-pharmacological tool supporting the management of hypertension. The objective of this research is to study the effects of different TENS and IC parameters on cardiovascular variables of normotensive volunteers and hypertensive patients.

Conditions

  • Healthy Volunteers
  • Hypertension, Essential

Interventions

DEVICE

Transcutaneous nervous electric stimulation (TENS)

TENS (Frequency 10 Hz or 100Hz /duration 200μs, Endophasys nms 0501® model, KLD Biosystems, Amparo, SP, Brazil) will be applied with intensity between 1 to 60 mA and the current will be adjusted every 5 minutes at the sensory threshold level muscle contraction or according to the tolerance to the stimulus informed by the volunteers. TENS will be applied in bilateral paravertebral region of C7 to T4 or long the brachial plexus and sciatic plexus.

DEVICE

Interferential electrical stimulation (IES)

The IES (Endophasys nms 0501®, KLD Biosystems, Amparo, SP, Brazil) will be applied in continuous mode with biphasic pulses. Bipolar electrodes with slope of 1/5/1. The rest of the parameters will be set to 4000 Hz, AMF of 100 Hz and the AMF variation of 25 Hz. The effect of the current will be adjusted by the intensity, it should produce paresthesia stimuli, without pain and below the motor threshold. Adhesive electrodes (MultiStick®, Axelgaard Manufacturing CO, Ltd, Fallbrook, CA, USA) will be housed in the paravertebral region, between C7 (Channel 1) and T4 (Channel 2). (SANTOS et al., 2013)

DEVICE

TENS and IES Placebo

Same protocol without electrical output.

Sponsors & Collaborators

  • Universidade Federal de Santa Maria

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
20 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-07-20
Primary Completion
2019-12-09
Completion
2019-12-09

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03258489 on ClinicalTrials.gov