Ultrasounds are high frequency sound vibrations that cannot be perceived by the human ear. In the therapeutic field, the application of ultrasounds to human tissue provides a cellular and inter-cellular high frequency massaging action. Also, ultrasounds can also be used under water. The head is immersed in water along with the area to be treated. The tissues irradiated by ultrasounds vibrate in turn, resulting in energy being released, which produces heat. This summarizes the biological effects of ultrasounds - a mechanical and diathermal effect:
The therapeutic effects of ultrasounds are partly due to the increase in temperature. These take the form of analgesia, relaxation of the muscles, and a fibrolytic and trophic effect.
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