Best TENS Unit Settings – Shape Junkie

Best TENS Unit Settings

Best TENS Unit Settings

A Transcutaneous Electrical Nerve Stimulation (TENS) unit is a very useful device when it comes to pain relief. And one of the main reasons it’s widely preferred is because it’s a non-invasive pain management tool.

But how exactly does this device work?

TENS units are small battery-operated devices that have sticky pads which are placed on the skin. These pads act by stimulating the underlying nerves through the use of mild electrical current and this creates a tingling sensation on your skin. This process can help suppress pain.

Apart from being a non-invasive method of pain relief, another advantage associated with this unit is that it can be used in the comfort of your home. But for best results, you need to find the right settings depending on your level of pain.

We’ve decided to outline the settings found on TENS units - and when you should use each one. 

Different Settings for TENS unit:

Tens unit settings

Generally the device features three settings as we’ll briefly explain below:

  • Normal/Continuous: If you’re new to TENS therapy, then we highly recommend the normal setting—only until you’re more comfortable with handling the device. But generally this setting is ideally suited for relieving short-term pain.
  • Burst mode: Patients who suffer from chronic pain will find this setting ideal. This is because it’s designed to stimulate the peripheral nerve fibers through a burst of pain relieving power.
  • Modulation mode: The modulation setting is designed for both acute and chronic pain relief. This is because this mode acts cyclically by varying between different settings.

Pulse Rates:

When using the TENS unit, it’s important to note that pain relief is felt at different frequencies. You must set the machine to a certain pulse rate and width depending on your pain intensity:

Pulse rate: 

The rate at which pulses are delivered is what‘s known as the pulse rate or frequency. Here we basically measure the number of electrical pulses felt in a second and this frequency is measured in hertz.

Tens Unit pulse rate
Pulse width/duration: 

The pulse width settings refer to the periods during which the electrical current is sent. Note that you can either modify or control these periods. Generally low or mid periods are enough to relieve pain but for muscle contraction, you’ll need longer pulse duration. Pulse width is measured in milliseconds and the recommended settings are 175-200Us.

Different machines produce different pulses—both rates and widths—depending on the brand.

Tens unit pulse width

High and Low Frequencies:

TENS units have two types of settings; high and low frequency. Generally most people prefer the high frequency but we’ll discuss both of them below.

High Frequency Setting:

When set to high frequency, the machine works by creating what is known as the “gate theory”. A “gate” is formed between your nerves and brain. Here the TENS unit effectively blocks out the pain signals from reaching your brain. As a result you don’t feel the pain.

A typical setting under high frequency would be:

  • Pulse rate = 60
  • Pulse width = 80

At this setting—or something close to that—your TENS unit will provide you with a “buzz” feeling that you’re likely to find comforting. This feeling will in turn stop the pain from reaching your brain.

If you pick this setting you’re likely to experience one of the following scenarios:

  • The pain is likely to return as soon as you switch off the machine. If you fall in this group of people, then you have to keep the TENS unit on continuous mode.
  • If you’re lucky, the pain may stop for a while after a 30 or 60 min session. In this case, you can repeat the session after 90 minutes to increase the treatment’s effectiveness.

If you experience severe pain, you can modify the settings to:

  • Pulse rate = 80
  • Pulse width = 150

Low Frequency Setting:

This setting is completely different from the high frequency. At low frequency, the massage functionality of the unit causes your body to release natural endorphins to help manage the pain. A typical low frequency setting would be:

  • Pulse rate = 2
  • Pulse Width = 200

In such cases, you don’t have to wear it in continuous mode because the pain free effect can last from minutes to hours depending on the individual.

Why is it Important to Use Different Settings on Your TENS Unit?

The effectiveness of a TENS treatment depends on the dosage. This means that any benefits will depend on both the frequency & intensity used. Each condition requires certain stimulation levels for effective results. If you don’t find the right combination using the machine won’t yield any positive effects.

We’ll outline a few examples of different frequencies below. Simply set the frequency on the machine based on the pain you feel:

  • Acute pain: If you suffer from acute pain then you must set the frequency to between 80 and 120Hz.
  • Muscle Stimulation: TENS units aren’t solely for pain relief. You can also use the device to stimulate your muscles. If that’s the case then you can set the frequency to between 35-50Hz.
  • Chronic pain: For chronic pain relief, it’s recommended that you set the frequency to between 2 and 10Hz.

Which Body Parts Are No Go Areas with a TENS Unit?

These devices will provide you with much needed pain relief—but only when used correctly. Though they’re considered to be safe and FDA approved, there are some parts of the body you must never use the unit on including:

  • Infected areas
  • Anywhere near—or around—your eyes
  • On your chest
  • In front of your neck
  • On open wounds
  • Over a tumor
  • Across cardiac pacemakers

Final Words:

Pain is highly subjective depending on each individual and can’t be quantified. What you consider to be intense pain can be the next individual’s moderate pain. This is why it’s important to note that the above are merely suggestions. It’s important to experiment with the settings to determine what works for you. The good news is that a TENS Unit can work for almost anyone.

Kevin Lee

Health and fitness have always been a passion for me; whether its being in the weight room, going for a run before work or even participating in a half iron man triathlon. ShapeJunkie was created to share to knowledge and love of fitness with others.

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