30
Participants
Start Date
March 31, 2012
Primary Completion Date
May 31, 2012
Study Completion Date
June 30, 2012
TENS
Adhesive electrodes (MultiStick®, USA) were placed on each side, about 3 cm to the right and left of midline vertebral process, at C7 (Channel 1) and T4 (Channel 2).
Placebo
The frequency of stimulation was 80 Hz and the pulse duration was 150 μs, equipment did not provide stimulation current.
University of Brasilia, Brasília
University of Brasilia
OTHER