Whole-body EMS training is intensive muscle training. It should not be started without checking whether health-related reasons speak against it.

During a session, electrical muscle stimulation technology may activate several major muscle groups at the same time. This makes whole-body EMS training highly time-efficient, but it also means that contraindications must be taken seriously.

The simple rule is: if a contraindication is present, whole-body EMS training should not be performed.

What are contraindications?

Contraindications are conditions or situations where a method should not be used because the risk may be too high.

For whole-body EMS training, this is especially important because the stimulus is not limited to one small muscle area. Several major muscle groups may be activated in parallel. This can place stress on muscles, circulation, metabolism and recovery.

A qualified provider should always perform a health screening before the first session. If there is uncertainty, EMS training should be postponed until the situation has been clarified.

Who should not use Whole-Body EMS Training?

Whole-body EMS training should not be performed when relevant contraindications are present. Examples include:

  • active medical implants, such as pacemakers or defibrillators
  • epilepsy or seizure disorders
  • pregnancy or suspected pregnancy
  • recent surgery
  • cardiac arrhythmias
  • known cardiovascular disease or coronary heart disease
  • diabetes mellitus
  • severe circulatory disorders
  • arterial circulatory disorders
  • bleeding disorders or active bleeding
  • acute bacterial or viral infections
  • fever or acute illness
  • severe neurological conditions
  • severe kidney or liver disease
  • open wounds, infected skin or injured skin in the electrode area
  • swollen, infected or inflamed skin areas
  • abdominal wall hernia or inguinal hernia
  • cancerous lesions or tumor disease where listed in device labeling
  • training under the influence of alcohol, drugs, narcotics or strong pain medication

This is not a complete global list. The exact contraindications depend on the specific device, country, regulatory framework, device labeling and instructions for use.

What if symptoms are unclear?

Unclear symptoms should never be ignored. Whole-body EMS training should not start if a person has unexplained pain, dizziness, unusual weakness, chest discomfort, shortness of breath, swelling, fever, signs of infection or any recent change in health status.

The provider should not “test” whether EMS is tolerated. If the situation is unclear, training should be postponed.

Why are implants and heart conditions critical?

Electrical muscle stimulation can interact with sensitive systems in the body. Active medical implants, heart rhythm disorders and cardiovascular disease are especially important because EMS involves externally applied electrical impulses and a strong muscular stimulus.

If active implants or heart-related contraindications are present, whole-body EMS training should not be performed.

Why do illness, surgery and wounds matter?

EMS training should not be performed during acute illness, fever, infection or active inflammation. The body is already under stress and should not receive an additional intensive training stimulus.

Recent surgery, open wounds, healing wounds or injured skin in the electrode area are also reasons to stop or postpone EMS training. Healing tissue should not be exposed to unnecessary strain or electrical stimulation.

Why do alcohol, drugs and strong pain medication matter?

Whole-body EMS training requires clear body feedback. Users must be able to feel the intensity, communicate with the trainer and react to instructions.

Training under the influence of alcohol, drugs, narcotics or strong pain medication is not appropriate. Pain perception, alertness, reaction time and body awareness may be reduced, making safe intensity control less reliable.

What role do device labeling and local rules play?

The exact contraindications and warnings depend on the specific device and its instructions for use. In the U.S., the FDA-cleared indications, device labeling and instructions for use of the specific electrical muscle stimulation device apply.

Outside the U.S., providers should follow applicable device labeling, regulated medical device requirements, CE-marked medical devices where applicable, local requirements and current scientific recommendations.

Medical advice can help clarify unclear situations. However, medical advice should not be used to override device-specific contraindications, labeling or instructions for use.

What should you remember?

Whole-body EMS training is not suitable for everyone. If contraindications are present, training should not take place.

Before the first session, a qualified provider should check your health status, medication, recent surgery, implants, symptoms and possible contraindications. When in doubt, do not train until the situation has been clarified.

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References

Kemmler W. et al. 2023: International guideline for safe and effective whole-body electromyostimulation training.

Von Stengel S. et al. 2024: Revised contraindications for the use of WB-electromyostimulation.

U.S. Food and Drug Administration. Guidance for Industry, FDA Reviewers/Staff and Compliance: Guidance Document for Powered Muscle Stimulator 510(k)s. Center for Devices and Radiological Health; issued June 9, 1999.

Device-specific FDA-cleared indications, device labeling and Instructions for Use of the applicable electrical muscle stimulation device

EMS-Training Editorial Basis: German source article on EMS contraindications.