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How does Interferential therapy differ from TENS?

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How does Interferential therapy differ from TENS?

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Interferential differs from conventional Neuromuscular stimulation and TENS in that it delivers concentrated stimulation deep into the affected tissue. Interferential exploits the interference of two separately generated sinusoidal currents applied to the body simultaneously. It is a low frequency current treatment that uses two medium frequency currents which “interfere” with each other to produce a beat frequency that the body recognizes as a low frequency energy source. The range of this frequency is usually 1-250 Hz. The body itself produces low frequency currents between 1 and 256 Hz. These currents are produced across the cell membranes by ionic exchange, and they will vary depending upon the tissue involved. By using frequencies in this range, different systems within the body can be stimulated.

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