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Intense yet gentle

backup:

Intense yet gentle for a healthy back

The backup system combines the advantages of medium-frequency and low-frequency current types to achieve optimal results when used for back problems. The user therefore benefits equally from the effects of the low frequency and the advantages of the medium frequency. To this end, the medium-frequency pulses are changed or modulated by various methods so that the effects of the medium frequency and low frequency can unfold in symbiosis. The modulated medium frequency, MET for short, is characterised by a better penetration depth and targeted promotion of cell activity and cell metabolism, and it enables different types of tissue in the body to be stimulated selectively and in accordance with your physiology.

Medium frequency and low frequency: that’s the secret

Not all currents are the same: different pulses have different effects. Changing and adapting the parameters, or the ‘settings’, results in a different effect. The changeable parameters include, for example, the frequency, i.e. the number of electrical pulses per second, and the pulse width, i.e. the duration of the individual pulse. The frequency of the current can be used to control which muscle fibre types are primarily addressed. The red type II muscle fibres which fatigue quickly are stimulated at 35 Hertz to 80 Hertz (Hz), whereas the white, low-fatigue type I fibres react primarily to frequencies between 2 Hz and 20 Hz. Between 20 Hz and 30 Hz, on the other hand, type I and type IIa muscle fibres are targeted in combination.

Findings about pulses from pain therapy

In addition to stimulating the muscles, electrical pulses are also used to influence the perception of pain in a targeted manner. The transmission of pain signals is thus inhibited in the range of 80 Hz to 100 Hz and provides individuals affected by back problems with relief from aggravating pain. With pulses between 2 Hz and 15 Hz, the body also releases hormones that counteract pain and brighten your mood.

Gentle pulses: the higher the frequency, the lower the resistance

Another factor is vital before the electrical signal penetrates the muscles and nerves to take effect – the current must overcome the galvanic and capacitive resistance of the skin. For what we call a low-frequency current up to 1,000 Hz, or LF for short, the capacitive resistance of skin is a high barrier – this means that the current penetrates less deeply. For medium-frequency alternating currents, i.e. a frequency of 1,000 Hz or higher, skin resistance is not a problem. This is due to the following principle: the higher the frequency, the lower the resistance. Medium-frequency current, or MF for short, therefore penetrates deeper and affects a wider area.

This is known as the ‘volume effect’ and it enables optimal activation of the superficial muscle layers as well as the deeper muscle fibres. Furthermore, owing to the minimal capacitive skin resistance, users perceive the MF current as extremely pleasant. This therefore enables higher pulse strengths, producing more intense effects through stronger muscle contractions.

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