Interferential Therapy (IFT) 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. Its use is contraindicated if the affected area has wounds, cuts or infections.
The basic principle of IFT is to use physiological effects of low frequency (at <250 pps) electrical stimulation of nerves without the associated painful and somewhat unpleasant side effects sometimes associated with other types of low-frequency stimulation, such as TENS. Tiny electrical impulses are induced into the tissues in the area of the pain. Where these waves intersect below the surface of the skin, the low-frequency stimulation induces the body to secrete endorphins, which are the body’s natural painkillers. Most patients find interferential therapy to be very beneficial and describe the treatment as being relaxing and having a ‘pins and needles’ sensation. Acute ligament sprains, muscle strains and spasms often respond well to interferential current therapy. Patient Benefits Reduces painful symptoms Decreases local swelling Helps restore normal movements Releases the body’s natural painkillers Accelerates the healing process