Difference Between Interferential Therapy (IFT) & Interferential Current (IFC) 2020

What is Interferential Therapy (IFT)?

Interferential therapy is commonly mentioned as IFT in scientific language. Interferential Therapy could also be a kind of Electro Therapy treatment that uses electric currents to stimulate tissue which provides relief from pain and reduces swelling and also many other health benefits.

IFT uses a selection of frequencies which stimulate the body to urge positive reactions like increasing blood supply during a specific area which increases the healing speed of an individual’s body

IFT Physiotherapy

In the United States of America (or more commonly known as the USA) Interferential Therapy is approved for the relief and management of post-traumatic and post-surgical pain. Many professionals use Interferential Therapy

For its drug-free and non-invasive promotion of healing and pain relief. IFT has become very fashionable because of simple use, Lack of side effects, and thus the amazing feedback from people suffering from a selection of varied conditions. It has been shown that multiple treatments provide better results in reception treatment

Home treatment can reduce pain and edema

Interferential machines are often used to treat pain related to Spondylitis, Back neck, Should pain, Constipation, Joint injuries, tennis elbow, injuries related to sports, etc.

How Interferential Therapy works?

Interferential Therapy (IFT) machines deliver endlessly

Stimulation deep within the affected tissues. The stimulation reduces both swelling and pain

IFT achieves the deepest penetration by using 4000Hz carrier waves of electricity to beat the skin impedance of our body

4 pole interferential works by putting two signals into the tissue at different frequencies

Some expensive machines use vectored fields. That is a quick-lived solution to the present problem as they constantly move the interference zone round the volume between the electrodes but this suggests the treatment is just delivered to a selected area for an area of the treatment time

In bipolar mode, the flexitime overcomes these problems

Early interferential therapy used analog circuits and was limited to the waveforms they could produce.

This uses a 4000-hertz carrier wave that delivers an amplitude-modulated low-frequency signal to the entire area between the electrodes not just the interference pattern of the body

Science has spent plenty of some time and energy in developing these IFT machines to beat the problems that patients suffer while using this device

Effects of interference frequencies:-

Physiotherapist believe that the low-frequency interference currents have subsequent effects

2 hertz- around this frequency the metencephalins of our body are stimulated resulting in a quick-term pain relief

10Hertz- This frequency features a beneficial effect on the system of our body and tends to make patients wakeful yet relaxed

130Hz – This frequency stimulates the assembly of endorphins and leads to longer-term pain relief and a few local anesthesias given to our skin

1-100Hz – This frequency sweep will increase the inflammatory rate of our body.

45 – 90Hz – This frequency sweep will make the sympathetic nervous system depress which may so allow the increased activity of the parasympathetic system, and also increase the blood supply in our beneficial body.

Interferential Therapy as a neighborhood of a treatment regime

The use of IFT should be considered an area of the whole treatment of the condition.

The whole treatment may include:

• Exercises to stretch injured muscles

• Exercises to maneuver stiff joints

• Exercises to strengthen muscle groups to support the joints of our spine and bones

Your physiotherapist will advise you accordingly.

Stiff joints are invariably painful so it is vital to know that gentle movement is typically better than resting.

Cautions and warnings

The same cautions apply to IFT on TENS.

However, thanks to the deep penetration produced by IFT signals, additional caution should be taken to not place electrodes so that this could overflow through the center of our nervous system and body.

The maximum current density is below recommended safe levels which could affect heart rhythm, but it is best to prevent or avoid  even the tiniest avoidable risk at any cause

What is Interferential Current Therapy (IFC)?

Interferential current (IFC) therapy is a very effective and easily available option that is why it is used as a therapy option by many physiotherapy clinics and physiotherapists to relieve pain and accelerate the healing process by dozens of times getting your body back to a healthy and pain-free state. The high-frequency signals of an IFC penetrate through the skin into deeper lying muscle tissues and cells of our body.

Electrodes are placed on our skin around the injured body part. The Interferential Current (IFC) device then transmits the electrical impulses in a minute of quantities through our skin to the body through the nervous system Underlying tissues and nerves of our body are stimulated which begins the natural healing properties. 

These impulses are not painful in the least. Patients describe the sensation as a minor prickle on their skin like a mosquito bite. Frequencies produced by the IFC have been proven to make endorphins active, the body’s natural pain killers. This can help to create a self-healing process without the need for any medications there are no medicines required to be done properly.

This form of therapy is also extremely useful in reducing pain, inflammation and curing edemas of our body

1.Reduces or eliminates your pain in a flick.

2.Noticeable decrease in swelling which reduces pain

Restores lost movement and improve restricted movements of our body and coordination too

 Makes the natural hormones much more active which can help your body heal faster.

Considered by many experts as a highly effective form of treatment for pain rather than taking any medications

How the Interferential Current Therapy Helps?

Interferential Current (IFC) stimulation is extremely useful within the treatment of circulatory system and muscular disorders it also helps in  stiffness of joints and edema

If you suffer from health problems like cumulative trauma disorders, body pain joint injuries, or are about to go under orthopedic surgery, or after an orthopedic surgery interferential current therapy is an important option. It will be very useful and will help you in many ways

Interferential current therapy has been in use for many years, and there are numerous case studies and research reports that have proved its versatility and importance to the physiological world and in treating diverse symptoms, pacing the healing process, and restoring normal movement of a humanoid body.

Patients who choose to undergo a specific interferential current therapy face much fewer problems post complications compared to people that rely exclusively on medications for pain relief. It also helps in blood circulation and increases the speed of the healing process by making the endorphins active.

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Frequently Asked Questions (FAQ)

What is Interferential Therapy (IFT)?

The fundamental guideline of Interferential Therapy (IFT)is to use the solid physiological portable ift impacts of low recurrence (<250pps) electrical stimulation of nerves without the associated painful and unpleasant side effects sometimes associated with low-frequency stim.

List Interference frequencies

2 hertz
45 – 90Hz

What is IFT Used for?

IFT is broadly utilized for help with discomfort, muscle incitement, expanded nearby blood stream and decrease of oedema. This treatment has been concentrated broadly and its successful help of agony in musculoskeletal conditions has been accounted for


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2 Source

Lambert I, Tebbs SE, Hill D, Moss HA, Davies AJ, Elliott TSJ (2000). Interferential therapy machines as possible vehicles for cross-infection. J Hosp Infect. 44(1), 59-64.

Ozcan J, Ward AR, Roberson VJ (2004). A comparison of true and premodulated interferential currents. Arch Phys Med Rehab. 85(3): 409-415