The Analgesic Effects of Different Swing Patterns of Interferential Currents on Cold-induced Pain

The analgesic effect of interferential therapy on clinical and experimentally induced pain

“…34,36,37,39,40 These studies used the VAS or the McGill Pain Questionnaire (MPQ) to assess change in pain. These measures are reliable and valid outcome measures suitable to measure pain intensity.…”

“…These measures have previously been determined to be reliable. [44][45][46] Significant increases in cold and hot pain threshold were demonstrated using TTP 34,40,47 (Table 3). Cold pain threshold was found to statistically increase in two studies.…”

“…Cold pain threshold was found to statistically increase in two studies. 34,40 The maximum period of the cold pain threshold increase was 20 minutes post-IFT. 40 These studies reported pain threshold to return to baseline at 10 and 20 minutes after the IFT was switched off 34,40 respectively.…”

Efeitos da variação da rampa de entrega do ΔF sobre a acomodação da corrente interferencial em mulheres saudáveis

“…This therapy is described as the application of two phases of medium frequency currents (2 or 4 KHz) which are transmitted through the skin surface and the device produces a modulated amplitude current 2 . Resulting current has a frequency equal to the mean of the two currents and will have a new amplitude modulated frequency (AMF) equal to the difference between these currents (e.g., if a 4000 Hz and a 4100 Hz currents are mixed, resulting frequency will be 4050 Hz, with AMF of 100 Hz) 3 .…”

“…Stimulation frequency maintenance is presented as a way of appearance of accommodation 7 . There are different electric characteristics available in the interferential device, most of them allow the user to adjust such characteristics and there are few studies on optimal parameters for the use of the interferential device 2,8,9 . ΔF is an AMF variation where there are frequency increases and decreases in patterns established in the equipment, which go from 1 to 100 Hz.…”