NCT01450371

Interferential Electrical Stimulation and Vasodilatation in Healthy Individuals

Interferential Electrical Stimulation Improves Peripheral Vasodilatation in Healthy Individuals: A Randomized Crossover Study

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 11 (actual)
• Sponsor: Hospital de Clinicas de Porto Alegre · Academic / Other
• Sex: All
• Age: 18 Years – 40 Years
• Healthy volunteers: Accepted

Summary

Interferential electrical stimulation (IES) increases local blood flow. It is not known whether increases in blood flow may be caused by inhibition of sympathetic activity, mediated by muscle metaboreflex activity. The purpose of this study was to evaluate the effect of IES on metaboreflex activation in healthy subjects.

Detailed description

The study sample consisted of 11 healthy young individuals. All subjects were non-smokers, non-obese and free of any signs or symptoms of disease, as revealed by medical history, physical examination and electrocardiogram at rest and during cardiopulmonary exercise testing. Exclusion criteria were pregnancy, breast-feeding, alcohol or drug abuse, and any medication with potential effects on cardiovascular variables. Subjects were asked not to drink caffeine-containing drinks or exercise for at least 12 and 48 hours, respectively, before the experimental protocols.

Conditions

• Decreased Vascular Flow

Interventions

Type	Name	Description
DEVICE	Interferential	The individuals are treated acutely with IES during 30 min, providing a continuous flow of symmetrical rectangular interferential current biphasic pulses using bipolar electrodes with two channels and a slope of 1/5/1. The fixed current is adjusted to 4000 Hz, with the current AMF at 100 Hz and an AMF variation of 25 Hz (25% of AMF).
DEVICE	Interferential Placebo	The same instructions and electrode positions were provided to the placebo, although the equipment did not provide any stimulation current

Timeline

• Start date: 2011-07-01
• Primary completion: 2012-09-01
• Completion: 2012-10-01
• First posted: 2011-10-12
• Last updated: 2013-01-24

Locations

3 sites across 1 country: Brazil