Corrente interferencial no limiar de dor induzida à pressão e ao frio, nas frequências de 2 kHz, 4 kHz e 8 kHz

Introduction: The interferential current is a therapeutic form of transcutaneous electrical nerve stimulation, which has its analgesic effects evaluated by experi-mental models of pain induction, as the pain to cold and pressure. Objective: To verify the effectiveness of different frequencies (2000 Hz, 4000 Hz and 8000 Hz) in altered pain threshold to cold and pressure. Methods: Twenty volunteers were randomly divided into four groups and were stimulated by different frequen-cies. The pressure pain threshold and the cold were evaluated by discomfort beyond the range Visual Analogue Scale. The evaluation forms occurred prior to stimulation, at the end, after 20 and 60 minutes. Results: The results, about the comparison between the ratings, were not significant in the placebo group and in the three groups who underwent electrostimulation. Conclusion: There was no change in pain threshold induced by cold and pressure at different frequencies of interferential current