Electronic muscle stimulators are used to elicit muscles in people by the use of electric impulses. The impulses are normally generated by the use of Neuromuscular Electrical Stimulation (NMES) machine that delivers the impulses through electrodes and onto the skin. This is usually done close to the muscles undergoing the stimulation. The impulses bring about a false feeling of actions that come from the central nervous system of the brain, thus causes relaxation and contraction of muscles.
Perhaps it is of essence that a brief history of the technology is considered prior to the consideration of how it works and the concept behind it. Electric current is able to activate muscles. This was proven in the 16th century by one scientist, Luigi Galvani after much experimentation. In 1791, he gave the very first evidence of changes that can be brought about by current on the action of muscular cells.
In the 1960s, the Soviet Union scientists concerned with sports applied the technology in athletics. With the knowledge that the technology was essential in muscle building, applied it to training elite athletes. This was with the hope that athletes so trained would gain energy by close to 40%. The increment would in turn enhance performance during the races.
Muscle functioning is almost entirely dependent on how they are trained. The skeletal muscles are such that their fibers are able to be activated to different degrees, independent of each other. This is also done by different EMS types. The changes so caused depend on patterns of EMS activities. These patterns or protocols lead to emergence of varying responses from contraction of the fibers. What this results in is a situation whereby muscles do not rely on brain impulses for their functionality. As a result, fatigue resistance is improved and production of force improved.
Signals from the brain are relayed through the spinal cord, but which does not always have to be the case. The NMES machine is able to electrically stimulate nerves that are attached to muscles at motor points. Upon stimulation, the nerves are made to contract and expand as would be the case during exercise. People who are not able to do exercise in the traditional way are able to still gain strength and mass within the muscles.
When it comes to their use, they are mostly used for therapy purposes. Those being rehabilitated and those going through physical therapy make use of it, albeit under strict supervision from experts. Over the years, it has been known to aid in quick repair of limbs that are broken. Similarly, for people who have excessive muscles and pain in shoulders and elbows, it is a great asset.
Secondly, for reasons of training, the technology can be put to use. Due to the effect that muscles that are toned have stronger cross sections, they are preferred. Fats in the body are also considerably reduced, which in turn enhances flow of blood.
One shortcoming of EMS is that they are not cost effective, especially when the end results are considered. Unlike popular belief, it is not a short cut to building of muscles. It only enhances the other methods that are natural.
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