226 - COLD AND PRESSURE PAIN THRESHOLD EVALUATION IN HEALTHY INDIVIDUALS SUBMITTED TO INTERFERENTIAL CURRENT WITH 4000 HZ

Abstract

The aim of this study was to evaluate the pain threshold to mechanical stimulation and cold, front to interferential current therapy in healthy subjects, using a bipolar technique applied on the nerve root. The study included 20 volunteers, divided into two groups of 10 each. What one group did the first day, the other did the second. We evaluated the pain threshold with a pressure algometer pain threshold and cold by the time the VAS to reach the pain threshold. As a form of electrical stimulation was used interferential current with the parameters predefined by the researchers and individuals were assessed on three occasions: soon after, 20 minutes and one hour after stimulation. The comparison between the assessments with the algometer, the results were not statistically significant, both in the placebo group, and in the group stimulated. Since the assessments of pain threshold to cold by the time the placebo group showed no significant difference. In the treated group, there is a significant decrease in pain threshold between the pre-and post-interferential immediately, and an increase from the immediate post-assessment and one hour after interferential, restoring the initial values. What about the comparisons between the ratings of the VAS, was observed in the placebo group a significant increase between the pre-interferential and one hour after stimulation. In the treated group there was a significant increase in the assessments pre-and post-interferential immediate, and also an increase between the pre-interferential and one hour after the current. With the methods used in this study, interferential current produced momentary increase sensitivity to cold reversible, and did not alter the pressure sensitivity.