TENS Machines, short for Transcutaneous Electrical Nerve Stimulators, are portable devices powered by batteries, designed to alleviate pain, including chronic conditions.

Similar to Electrical Muscle Stimulators (EMS), TENS devices utilize low voltage electrical impulses to mitigate pain, with TENS targeting nerves rather than muscle contraction, making it the preferred choice for many.

How TENS Machines Operate

Med-Fit offers easily portable TENS machines with leads connected to electrode pads, or customers may opt for our Wireless TENS Machine options. Electrodes are placed directly on the body where pain is experienced, with voltage variations adjustable by the user.

Once settings are adjusted, the device sends electrical impulses through the tens electrodes. Users may feel a tingling sensation where the electrodes are placed.

These impulses stimulate nerve pathways, reducing pain signals sent to the brain and promoting the production of endorphins, the body's natural painkillers.

Who Benefits from TENS Machines

TENS Machines are commonly used to alleviate pain in nerves, joints, muscles, and more, without the side effects associated with medication. They are employed to treat various symptoms and conditions, including:

Period Pains
Labor Pains
Neck Pain
Muscle Soreness
Back Pain
Shoulder Pain
Increased Blood Circulation

They have also been effective in managing conditions such as

Fibromyalgia
Spinal Cord Injuries
Sports injuries
Endometriosis
Arthritis
Osteoarthritis
Rheumatoid Arthritis
Multiple Sclerosis (MS)
Neuropathy
Sciatica
TMJ
Rheumatoid Arthritis
Tennis Elbow

How Does a TENS Machine Work?

The Endorphin Release Theory proposes that a TENS (Transcutaneous Electrical Nerve Stimulation) machine works by sending electrical impulses to the sensory nerve endings that control pain. This stimulation triggers the release of endorphins, the body's natural painkillers, which help reduce discomfort. These endorphins work similarly to prescription painkillers but without the associated side effects.

According to the Gate Control Theory, a neural mechanism in the spine acts as a gate that opens and closes in response to signals from the brain. The electrical impulses from the TENS machine interfere with the pain signals in the body, causing the 'gate' to react to these impulses rather than the pain signals. As a result, even if you would normally experience pain, your brain struggles to interpret the signals, leading to reduced pain perception.

The Advantages of Using TENS for Pain Relief

Reduced Need for Medication: TENS can significantly decrease the reliance on painkillers or analgesics, as it helps with pain relief.
Affordable: It offers an inexpensive alternative to traditional pain relief methods, without the need for medication.
No Severe Side Effects: Unlike many pain medications, TENS is generally safe, with no severe side effects. Most users find that they can quickly return to their normal routine after use.
Natural and Safe: TENS works by stimulating the body naturally, improving its response to pain without causing harm.
Portable and Easy to Use: TENS machines are compact, making them convenient for use at home or on the go.
Improved Wellbeing: TENS can also help alleviate fatigue and exhaustion caused by sedentary lifestyles, improving overall wellbeing. It has been shown to enhance sleep patterns as well as reduce aches and pains.
Inflammation and Nerve Pain Relief: The right electrical stimulation can help reduce inflammation deep in muscle fibres and relieve pain caused by pinched nerves or conditions like sciatica.
Muscle Relaxation and Blood Circulation: TENS also serves as a natural massager, improving blood circulation, reducing muscle spasms, and promoting better motor function. There are some products specifically designed for improving blood circulation, especially in your legs. The most popular product is the Medi-Boost.

How to Use a TENS Machine

Since TENS machines are medical devices, it's important to consult your doctor to ensure their suitability for your condition. Always read the user manual for specific instructions, but the general guidelines are as follows:

Apply Electrodes: Place the sticky pads or electrodes on the affected area.
Start Low: Begin with the lowest setting and gradually increase the intensity until you feel comfortable.
Avoid Certain Areas: Never place the pads on your face, directly over the heart, on swollen or inflamed areas, or on broken skin. If you have sensitive skin, use pads designed to prevent irritation.
Check Battery/Charge: Ensure the unit is adequately charged or that the batteries are replaced regularly.
Storage: Store the unit in a cool, dry place. Disconnect lead wires when not in use and keep them safely stored.

Do TENS Machines Work?

There is substantial evidence from healthcare professionals, physiotherapists, and sports experts suggesting that TENS machines can help alleviate various types of pain. However, the effectiveness of the device can vary depending on the individual, the condition being treated, and how the machine is used.

Are There Any Side Effects?

TENS is generally considered safe and is a preferred drug-free pain management option for most people. The side effects are minimal, provided the machine is used correctly. If the intensity is too high, skin irritation may occur, which is why it is crucial to follow the manufacturer's instructions.

TENS should not be used by individuals with certain health conditions. Always seek medical advice before use if you:

Have epilepsy or heart problems
Use a pacemaker or any other implanted electrical device

Can TENS Be Used for Labour?

TENS is known to be effective for pain management during the early stages of labour, especially for lower back pain. However, it’s important to consult with a healthcare professional before using a TENS machine during pregnancy. If deemed safe, start using the device when you experience regular contractions or backaches.

Some women may choose to continue using TENS during the later stages of labour to manage pain, particularly if they experience chronic lower back pain.

How Long Does Pain Relief Last?

The duration of pain relief from a TENS machine can vary. Some users report that pain returns immediately after turning off the device, while others experience relief for up to 24 hours. Studies suggest that the benefits may increase with regular use. However, it is important to use the device wisely and consult with a healthcare professional, as frequent use may lead to a tolerance to the treatment.

Frequently Asked Questions about TENS Machines

Can TENS Machines help with cramps? Yes, TENS can provide pain relief for cramps, including menstrual cramps and leg cramps.
Do TENS Machines tone muscles? TENS does not tone muscles; this is a function of EMS devices.
What if I have sensitive skin? Sensitive skin electrodes are available to accommodate users with sensitive skin.
Can TENS Machines burn fat? TENS is not designed to burn fat; EMS devices are more suitable for this purpose.
How long should I use a TENS machine for? Typically, sessions last 15-30 minutes and can be repeated several times a day as needed.
When should I not use a TENS device? Avoid using TENS devices in the bath or shower, while operating machinery, or while driving.