Compex SP 8.0 Руководство по эксплуатации онлайн [5/362] 877814

2. HOW DOES ELECTROSTIMULATION WORK?

Electrostimulation involves stimulating nerve ﬁbres by electrical impulses transmitted by electrodes. The

electrical impulses produced by Compex stimulators are high-quality impulses that are safe, comfortable

and effective and stimulate various types of nerve ﬁbres:

1. Motor nerves to stimulate a muscle response referred to as electrical muscle stimulation (EMS).

2. Certain types of sensitive nerve ﬁbres to obtain analgesic effects or pain relief.

1. STIMULATION OF MOTOR NERVES (EMS)

With voluntary activity, the brain orders muscles to contract and a command is then sent to nerve ﬁbres

in the form of an electrical signal. This signal is then sent to muscle ﬁbres, which contract. The principle

of electrostimulation correctly reproduces the process involved in a voluntary contraction. The stimulator

sends an electrical impulse to nerve ﬁbres to excite them. This excitation is then transmitted to muscle

ﬁbres and results in a mechanical response (= a twitch). This is the basic requirement for muscular

contraction. The muscular response is to all intents and purposes identical to the muscular work

controlled by the brain. In other words, the muscle does not distinguish between a command sent by the

brain or the stimulator.

Programme settings (number of impulses per second, duration of contraction, rest time, total programme

duration) subject the muscle to various types of workout, depending on the muscle ﬁbre. Various types

of muscle ﬁbres can be identiﬁed depending on their respective contraction speeds: slow, intermediate

and rapid ﬁbres. A sprinter clearly has more rapid ﬁbres and a marathon runner has more slow ﬁbres.

With good knowledge of human physiology and perfect control of stimulation settings in the various

programmes, muscular workout can be very accurately directed to achieve the desired objective

(muscular strengthening, increased blood circulation, ﬁrming, etc.).