Electric current is widely used in physiotherapy. Changes in the parameters of the current may diametrically modify its mechanisms of action and the observed effects on the body.
In general, applied for medical purposes currents are divided into low, medium and high. As high-frequency current is determined by a frequency of 100,000 hertz. This category was introduced additional subdivision currents, again depending on how high frequency.
High frequency currents are generated in special apparatus and apply from a distance on the patient. The exception is the local darsonvalization, which uses special electrodes impact on the body.
On the physiological effects of RF currents preserved their brand is the formation of endogenous heat in undergoing their impact tissues. A high-frequency currents induce fine vibrations of molecular level, resulting in evolution of heat. This heat is formed at different depths in the tissue as the warming effect continues after the termination of the procedure.
The operation of high-frequency currents on the central nervous system is a sedative, and on the autonomic-sympatholytic or summarized, these currents have a relaxing effect on the nervous system. The same can be said about their effect on the smooth muscle of the bronchi, which is added to antispasmodic and anti-inflammatory action.
The first group of high-frequency currents are so. Called. D'currents. Regional application used for pain syndromes such as neuralgia, neuritis, radiculitis and others. The analgesic effect is due to the increase in pain threshold of skin receptors and inhibiting the transmission of pain signals by nerves.