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Unpacking the Science Behind EMS Machines: How Electrical Muscle Stimulation Works

Updated: May 27


An EMS (Electrical Muscle Stimulation) machine, also known as an EMS device or EMS unit, is a device that, as its name suggests, uses electrical impulses to stimulate muscles. It is primarily used in physiotherapy, fitness training, and muscle rehabilitation.

An EMS machine typically consists of a control unit with various settings and programmes, as well as electrode pads or straps that are attached to the body. The intensity and frequency of the electrical impulses can usually be adjusted to suit the individual's needs and comfort level.




Benefits of EMS Machines


In the market today, there are different types of EMS machines available – there are professional-grade devices used in clinical settings, and you can even purchase smaller portable units for personal or home use. Among the benefits of EMS training using EMS machines are:

  1. Muscle Strengthening: EMS machines can help to stimulate and strengthen muscles, making them a useful tool in rehabilitation after injuries or for individuals with limited mobility.

  2. Muscle Recovery: EMS can aid in muscle recovery by increasing blood flow to the muscles, reducing muscle soreness, and promoting relaxation.

  3. Physical Therapy and Pain Management: EMS machines are commonly used in physiotherapy to help patients with muscle re-education, improving muscle function and coordination following injuries or surgeries. Electrical muscle stimulation can provide pain relief by stimulating the release of endorphins, the body's natural painkillers. It may be used to manage chronic pain or acute pain resulting from injuries.

  4. Improving Athletic Performance: Athletes and fitness enthusiasts incorporate EMS training into their workout routines to supplement traditional exercise, target specific muscle groups, and potentially enhance muscle strength and endurance.

  5. Weight Loss: Many busy professionals are opting for EMS training as it is believed to be a more convenient workout option when combined with a healthy diet. EMS training can help create a calorie deficit by increasing muscle activation and burning more calories during exercise.



How does EMS work?


EMS works by delivering electrical impulses to the muscles through electrodes placed on the skin. These electrical impulses mimic the natural signals that the central nervous system sends to muscles during voluntary muscle contractions.

Here’s an overview of how EMS works:

  1. Electrodes or electrode pads are placed on the skin over the target muscle groups. These electrode pads are connected to the EMS machine or control unit via wires.

  2. The EMS machine generates electrical impulses, typically in the form of a low-frequency current. The intensity, duration, and frequency of the electrical impulses can be adjusted based on individual needs and preferences.

  3. When the EMS machine is activated, it sends electrical impulses through the electrodes to the muscles. The electrical impulses bypass the central nervous system and directly stimulate the motor nerves responsible for muscle contractions.

  4. The electrical impulses cause the muscles to contract and relax involuntarily. These contractions are similar to the ones produced during voluntary muscle contractions in response to signals from the brain.

  5. The EMS machine generates a series of electrical impulses that alternate between muscle contraction and relaxation phases. This pattern helps to simulate the natural muscle contractions that occur during physical activity.


With regular use, EMS can help strengthen and tone muscles, increase muscle endurance, improve muscle coordination, and aid in muscle recovery. It can be used for fitness training, physical therapy, rehabilitation after injuries, and muscle conditioning.

It is important to note that while EMS can stimulate muscle contractions, it should be used in conjunction with other forms of physical activity to achieve overall fitness goals. Additionally, proper electrode placement, following manufacturer instructions, and using appropriate intensity levels are crucial for safe and effective EMS use. It is recommended to go with certified EMS trainers who can customise the type and intensity of your session to reflect your desired outcomes.

Remember though that individuals with certain medical conditions or implanted devices, such as pacemakers, should consult with their healthcare professionals before using EMS to ensure it is safe and appropriate for them.




Volt Fitness is a luxury EMS studio in Melbourne that offers short, intensive training sessions with maximum efficiency and sustainable results in a feel-good atmosphere. 20 minutes at Volt Fitness are as good as 90 minutes of sweating it out at a traditional gym.

Ready to start working on your fitness goals? Take a look at our training options or chat with us at (03) 8393 5131.


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