Key result
10Hz interferential current reduces sympathetic activity ~6%, whereas 100Hz increases it.
Why the study?
The effects of different amplitude-modulated frequencies of interferential current on the autonomic nervous system in healthy volunteers were not well characterized.
Does interferential current alter autonomic nervous system balance in healthy volunteers?
RCT (n=30)
Does interferential current alter autonomic nervous system balance in healthy volunteers?
Interferential current at 10Hz improves autonomic balance in healthy volunteers, highlighting its potential as a non-pharmacological intervention to be tested in hypertensive patients.
AMF-10Hz IC acutely improved autonomic balance in healthy adults; extends frequency-specific findings and leaves open testing in hypertensive patients.
To evaluate the effects of different amplitude-modulated frequency (AMF-100Hz and AMF-10Hz) of the interferential current (IC) on autonomic nervous system (ANS) in healthy volunteers. Thirty healthy volunteers (23.7 ±2.7 years old) were randomized into placebo interventions (turned off), IC with AMF-100Hz and IC with AMF-10Hz. Interventions ware applied in the paravertebral ganglionar region for 30 minutes. ANS evaluated by the heart rate variability before and immediately after the interventions. 10Hz intervention reduced the sympathetic activity in 6% and an increase in the parasympathetic in 6%. 100Hz intervention increased 12% to sympathetic activity and decreased 12% to parasympathetic activity. IC changes the autonomic balance in healthy volunteers. 10Hz reduces the sympathetic activity and increases parasympathetic, although the 100Hz has opposite results. The IC at 10Hz improves the autonomic balance and presents potential effects to be tested in hypertensive patients.
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Oliveira et al. (2022) conducted an RCT in Healthy (n=30). Interferential current (AMF-100Hz and AMF-10Hz) vs. Placebo (turned off) was evaluated on Autonomic nervous system (ANS) evaluated by heart rate variability. Interferential current at 10Hz reduced sympathetic activity by 6% and increased parasympathetic activity by 6%, whereas 100Hz increased sympathetic activity by 12%.
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