Scientific Basis

Proven training results at 20Hz

EMS devices currently on the market are set up to cover just about every frequency. EMS expert, Professor Moritani of Kyoto University, has isolated this to a frequency that has proven to be most effective for training muscles. What is the ideal stimulation for exercising muscles? Viewed from a sports science aspect, multiple frequencies were analyzed and compared with a particular focus on the muscle development mechanism.

20Hz

frequency

Subject of Analysis: Muscle Tension (=strength exhibited by muscles)

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When frequencies exceeding 20Hz are applied for approximately 60 seconds, muscle tension declines. As a result, the necessary neuro- physiological conditions are not achieved and the expectations in muscle training results decrease.

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At 20Hz, the muscle tension is maintained over a prolonged period of time. Therefore, it was concluded that the frequency is effective for continuously training muscles.

Reference: Moritani et al. Exp Neurol 88:471-483,1985

Subject of Analysis: Muscle Oxygen Consumption Volume

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Comparison muscle oxygen consumption at 20Hz and 60Hz

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Photo: Verification testing (Moritani Laboratory)

When exercised, the muscles use energy and consume oxygen. Compared to other frequencies, 20Hz has proven to result in higher oxygen consumption and more effective training results.

Data provided by Professor Toshio Moritani, Kyoto University