INTERFERENTIAL CURRENT IN DELAYED ONSET OF MUSCLE SORENESS

Abstract

Aims: to evaluate the use of interferential current on the sural triceps volunteers with delayed onset muscle soreness, through the visual analogue scale (VAS) and the local pressure. Methods: fourteen healthy, sedentary individuals were recruited and randomly distributed in: Placebo Group and Experimental Group. To assess pain VAS and pressure algometry was used 8 times (EV1-8) in 4 days of intervention (1st day exercise, 1st-4th days electrostimulation), always before and after the therapy. To promote the DOMS, participants performed concentric and eccentric movements of planti-dorsiflexion on a 20 cm step. To perform the electrical stimulation, the electrodes were placed in the lateral gastrocnemius muscle belly and another in the medial gastrocnemius. It was applied for 20 minutes at a high intensity, still comfortable for the subjects, with a 4 kHz base frequency, bipolar and with 100Hz AMF. Results: there were differences among the groups. The EV1 placebo displayed results different from all the others groups’. Experimental group AV1’s results weren’t different from AV8’s. When compared, significative differences were found em AV3, AV4, AV6 and AV8. In assessing the pressure pain intragroup statistical difference was found only for placebo. EV3’s was lower than EV7’s. Conclusion: The interferential current was effective to reduce the feeling of delayed onset muscle soreness.