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Is EMS training safe?Updated 5 days ago

Yes. Used properly, full-body EMS is a safe and effective fitness modality, especially given the absence of external loads or wear and tear on your joints. Please refer to our Instruction Manual for more information on who can use Katalyst and its proper use.


As it relates to EMS science, the current strength of EMS impulses is in a very low milliampere range. The conductivity of various body tissues varies depending on fluid content and the number of ions present in the tissue. Good conductors are blood, urine, lymph, and muscles, while poor conductors include bones, tendons, joint capsules, and fat tissue. As a result, electricity does not flow through the body in a straight line. Rather, it flows in the direction of the least resistance.


When stimulating muscles using EMS, the resistance is always in the form of a series connection. First, the electricity reaches the skin, then the subcutaneous fat tissue, and finally the muscles. As a result, the voltage actually reaching the muscles is far less than the voltage delivered to the skin. 


There are 3 types of muscles in the human body:

  1. Smooth muscles (internal organs - e.g. intestines, stomach, kidneys, liver, vascular)
  2. Cardiac muscles (a combination of smooth and striated muscle tissue, operating the heart’s movement)
  3. Skeletal muscles (striated muscles that can be triggered voluntarily to move the body)


Katalyst Full Body EMS Training only stimulates the striated skeletal muscles. It is not possible to stimulate the heart or other organs with the Katalyst device due to the specific impulse parameters used.

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