Beurer EM 49 Instrucciones De Uso página 33

Therapy memory
The EM49 records the treatment time. To reach the therapy memory,
switch the device on using the ON/OFF
the button for 5 seconds. The treatment time lapsed appears in
the display. The top two numbers stand for minutes; the hours are shown
below. To reset the treatment time, press and hold the button
5 seconds. When replacing the battery, the therapy memory is automati-
cally reset. Press the „Menu" button to return to selecting a program, or
switch the device off. Info: Therapy memory cannot be accessed if the
Doctor's function is activated.
11. CURRENT PARAMETERS
Electrostimulation units operate with the following current settings, which
may affect stimulation effects differently, depending on the setting:
11.1 Impulse shape
This describes the time function of the electrical im-
pulse.
It distinguishes between monophasic and biphasic
pulse currents. In monophasic pulse currents, the
current flows in one direction and in biphasic pulse
currents the electrical impulse alternates its direc-
tion.
The digital EMS/TENS unit only provides biphasic pulse currents as these
relieve muscles, cause little muscle fatigue and provide safer application.
11.2 Impulse frequency
The frequency indicates the number of individual im-
pulses each second and is given in Hz (Hertz). It can
be calculated by determining the cyclic value for the
time period. The relevant frequency determines which types of muscle
fibres react favourably. Slow-reacting fibres react more easily to lower im-
pulse frequencies up to 15 Hz, whereas fast-reacting fibres only respond
from approximately 35 Hz onwards.
button and press and hold
for
Time
33
Impulses of approx. 45 – 70 Hz are linked with constant tension in the
muscles and quicker fatigue. Higher impulse frequencies are therefore
favourable in strength and maximum power training.
11.3 Impulse width
This indicates the duration of an individual impulse
in microseconds. The impulse width therefore de-
termines, among other things, the penetration of the
electricity, where usually: larger muscle masses re-
quire larger impulse widths.
11.4 Impulse intensity
Setting the intensity levels depends on the individual
sensitivity of each user and is determined by a variety
of variables, such as site of application, blood circula-
tion to the skin, skin thickness and the quality of the electrode contact.
The setting used should be effective but should never cause an unpleas-
ant sensation, such as pain, at the site of application. While a gentle tin-
gling indicates sufficient stimulation energy levels, any setting that causes
pain should be avoided.
During longer applications it may be necessary to make readjustments
due to the adjustment processes over time at the site of application.
11.5 Cycled impulse parameter variation
In many cases it is necessary to cover the overall tissue structure at the
site of application by applying several impulse parameters. In the digital
EMS/TENS unit, this is achieved by the provided programs, which auto-
matically make a cyclical impulse parameter change. This also prevents
individual muscle groups at the site of application being affected by fa-
tigue.
The digital EMS/TENS unit provides sensible default current parameter
settings. With this, you can change the impulse intensity at any time dur-
ing use. For 6 programs you can also set various parameters for stimula-
tion yourself.