Reduces acute and chronic pain and swelling, helps to decrease muscle spasm, spasticity, and weakness, and generally improves healing and speeds healing time. Our clinic was one of the first in the province to have an interferential machine. We now have 4 of them. Sports injury treatment is impossible without having interferential current available. It is used by every professional sports team throughout the world. It is sometimes quite amazing how fast some injuries will respond to interferential current.