She wrote the textbook Interferential Therapy Workbook, in 1996 and is planning a full clinical trial using IFT for asthma in the next 18 months. IFT is a system of getting a low frequency current into the body. This beat frequency is the difference between the medium frequency currents. The body recognises it as the required low frequency current. The reason for using medium frequencies in this way is that the lower the frequency the higher the resistance of the skin to the current, i.e. the lower the frequency the more the sensation you feel.
Low frequencies can actually be painful.
The importance of using low frequencies is that it has been shown that the body itself produces low frequency currents between 1 and 256 Hz. Different systems in the body produce different frequencies and these can be picked up by ECGs, EMGs and EEGs. By using specific frequencies and frequency ranges, then different systems can be stimulated and activated. In short, IFT stimulates the body to heal itself. One of the commonest uses of IFT is to increase the rate of inflammation, thereby speeding up the healing process.