The Transcutaneous Electrical Diaphragmatic Stimulation influences the Heart Rate Variability decreasing sympathetic activity and increasing parasympathetic activity in healthy subjects: a controlled clinical trial

Evaluation Of The Effects Of Transcutaneous Electrical Diaphragmatic Stimulation On Cardiac Autonomic Balance In Healthy Individuals

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12610000786099

Enrollment

Registered

2010-09-22

Start date

2010-05-01

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The transcutaneous electric diaphragmatic stimulation (TEDS) is a technique of muscle training which results in changes in breathing pattern and rhythm. The technique consists of applying an electrical stimulation through electrodes positioned between the sixth and eighth ribs. Knowing the respiratory influence in heart rate, this article aimed at evaluating if the TEDS changes the cardiac autonomic balance. Healthy volunteers, of both genders and same age group, were studied, kept lying down and at rest. It was advised that they should perform a respiratory frequency of 12 bpm during all the experiment. The RR intervals were obtained by Polar RS800CX monitor, fixed on the wrist and strap catchment positioned in the chest, for the analysis of the heart rate variability by the frequency domain before, during and after the implementation of eletric stimulation (TEDS). Whit this study we could conclude that TEDS modifies the cardiac autonomic balance in favor of parasympathetic system, probably due to the increase the depth of breathing caused by greater diaphragmatic excursion.

Interventions

The subjects were instrumented with cardiofrequencimeter (Polar RS800CX). For implementation of transcutaneous electric diaphragmatic stimulation (TEDS), silicon electrodes were positioned in height from sixth to eighth intercostal spaces, using the apparatus Neurodyn Transcutaneous electrical nerve stimulation/ Functional electrical stimulation (TENS / FES) - 02 output channels – Ibramed. The parameters used for TEDS were: current frequency of 30 Hz, pulse duration of 25 microseconds, Ton= 2, T

Study design

Allocation

Non-randomised trial

Primary purpose

Treatment

Eligibility

Sex/Gender

All

Age

20 Years to 35 Years

Healthy volunteers

Yes

Inclusion criteria

Volunteers without prior known cardiac pathology, who did physical exercise sporadically (no more than once a week).

Exclusion criteria

Those who were using drugs that interfere with the autonomic activity of the heart as well as smokers and drinkers.

Outcome results