The principle of Interferential Therapy (IFT) is to utilize the effects of low frequency (<250pps) electrical stimulation of nerves without the associated painful and somewhat unpleasant side effects sometimes associated with low frequency stimulation. Numerous ‘portable’ interferential devices have become easily available. Despite their size, these devices are perfectly capable of delivering ‘proper’ interferential therapy, though some have limited functionality and ability for the practitioner to ‘set’ all parameters.
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