Interferential therapy (IFT) is one of various types of physical therapy used at Chiro & Sports Med. IFT is used in four clinical applications, to relieve pain, stimulate muscles, increase local blood flow and reduce edema. It uses a mid-frequency electrical signal to treat muscular spasms and strains. The current produces a massaging effect over the affected area at periodic intervals, and this stimulates the secretion of endorphins, the body’s natural pain relievers, thus relaxing strained muscles and promoting soft-tissue healing.
It has been suggested that IFT works in a ‘special way’ because it is ‘interferential’ as opposed to ‘normal’ stimulation. The machine can be set up to act more like a TENS-type device or a muscle stimulator by adjusting the stimulating (beat) frequency. Some patients regard it as more acceptable, as it generates less discomfort than some other forms of electrical stimulation.