How Does Electrostimulation Work - Compex Mi-SPORT Manuel D'utilisation

Neurostimulation
ll electrical specifications are given for
A
a charge between 500 and 1000 ohms
per channel.
Channels: Four independent and individually
adjustable channels electrically insulated from each
other and from ground
Impulse shape: Constant rectangular current
compensated to eliminate any direct current
component to avoid any residual skin polarisation
Maximum current of an impulse:
120 milliamperes
III. HOW DOES ELECTROSTIMULATION
WORK ?
he principle of electrostimulation is
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to stimulate nerve fibres by means of
electrical impulses transmitted by
electrodes.
he electrical impulses generated by
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Compex stimulators are high-quality
impulses – ensuring safety, comfort
and efficiency – that stimulate different
types of nerve fibres:
1. the motor nerves to stimulate a muscular
response. The quantity of work and the benefits
obtained depend on the stimulation parameters.
This is known as electromuscularstimulation (EMS).
2. certain types of sensitive nerve fibres to obtain
analgesic or pain-relieving effects
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Intensity increase interval:
Manual stimulation intensity adjustment: 0-999
(energy units)
Minimum interval: 0.5 mA
Impulse duration: from 60 to 400 microseconds
Maximum quantity of electricity per impulse:
96 microcoulombs (2 x 48 µC compensated)
Typical rise time for an impulse: 3 microseconds
(between 20% and 80% of maximum current)
Impulse frequency: from 1 to 150 Hertz
1. Motor nerve stimulation
(EMS)
n voluntary activity, the order for
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muscular work comes from the brain,
which sends a command to the nerve
fibres in the form of an electrical signal.
This signal is then transmitted to the
muscular fibres, which contract.
T he principle of electrostimulation
accurately reproduces the process
observed during a voluntary contrac-
tion. The stimulator sends an electrical
current impulse to the nerve fibres,
exciting them. This excitation is then
transmitted to the muscular fibres
causing a basic mechanical response
(= muscular twitch). The latter consti-
tutes the basic requirement for
muscular contraction.
his muscular response is completely
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identical to muscular work controlled
by the brain. In other words, the
muscle cannot distinguish whether
the command comes from the brain
or from the stimulator.
he parameters of the Compex
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programs (number of impulses per
Electrical
impulse
Excitation
Excitation
transmission
Motor
nerve
Stimulated
muscle
Basic mechanical response = muscular twitch
second, contraction time, rest time,
total program time) subject the mus-
cles to different types of work, accor-
ding to muscular fibres. In fact,
different types of muscular fibres may
be distinguished according to their
respective contraction speed: slow,
intermediate and fast fibres. The fast
fibres will obviously predominate in a
sprinter, while a marathon runner will
have more slow fibres.
ith a good knowledge of human
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physiology and a perfect mastery of
the stimulation parameters of the va-
Benefits of electrostimulation
Electrostimulation is a very effective way to make
your muscles work:
with significant improvement of different
muscular qualities,
without cardio-vascular or mental fatigue,
with limited stress on the joints and tendons.
Electrostimulation thus allows a greater quantity
of work by the muscles compared with voluntary
activity.
To be effective, this work must involve the greatest
possible number of muscular fibres. The number
of fibres working depends on the stimulation
rious programs, the muscular work
can be directed very precisely towards
the desired goal (muscular reinforce-
ment, increased blood flow, firming
up, etc.).
2. Stimulation of the
sensitive nerves
he electrical impulses can also
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excite the sensitive nerve fibres to
obtain an analgesic or pain-relieving
effect.
T he stimulation of the tactile sensitive
nerve fibres blocks the transmission
of pain by the nervous system. The
stimulation of another type of
sensitive fibres creates an increase in
the production of endorphins and,
therefore, a reduction of pain.
W ith pain relief programs, electrosti-
mulation can be used to treat localized
sharp or chronic pains as well as
muscular pains.
Warning: do not use the pain relief
programs for a long period without
medical advice.
energy. It will therefore be necessary to use the
maximum tolerable energy. The user controls this
aspect of stimulation. The higher the stimulation
energy, the greater the number of muscular fibres
that are working and, therefore, the more signifi-
cant the progress achieved.
To maximize your results, Compex recommends
that you complement your electrostimulation
sessions with other efforts, like:
regular exercise,
proper and healthy nutrition,
balanced lifestyle.
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