INFORMATION ENS DEVICES
What is Low Frequency?
Although we do not notice, our bodies generate very weak electricity from various parts of the body including the brain, heart, muscles and nerves. This electricity is called bioelectricity. The bioelectricity plays an essential role for the normal functioning of our bodies. Our bodies sensitively react to electric stimulation applied from the outside and cause various changes. The method to treat abnormality of bioelectricity, which is manifested as stiffness or pain, by effectively using the above mentioned action is called electrotherapy of which low-frequency therapy is typical.
Mechanism of low-frequency electrotherapy
Pumping action of muscles
Muscles contract and relax with the flow of the low-frequency current. This helps to activate the pumping action of the heart. When the muscle relaxes, a large amount of blood flows in, and when the muscle contracts, the blood containing wastes are pumped out. With repeated actions, the blood flows smoother and the blood circulation is improved.
Shutting out pain signal
When low-frequency current flows to the region experiencing pain, it acts on the transmission mechanism of pain. Thus low-frequency current is said to reduce the transmission of pain to the brain.
What is frequency?
Frequency is the number of times electric stimulation is applied to the body per second and is represented by a unit called Hertz (Hz).
Effects of low-frequency stimulation
Low-frequency stimulation is effective in relieving symptoms of chronic pain, stiffness and numbness. It is said to have the effects to activate secretion of pain suppressing substance or to improve the blood circulation.
What is High Frequency and its effects?
High frequency stimulation is effective for acute (nerve) pain and is said to be especially useful in the immediate blockage of pain transmission compared to low-frequency stimulation.
