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1 3 . aV a i l a B l e t H e r a P y P r O G r a M S
125 EN WIRELESS PROFESSIONAL
cateGOry PaiN relieF
PrOGraM eNdOrPHiNic
WHeN?
An increase in the tension of the contractured muscle fibres and the crushing of the
capillary network resulting from this causes a decrease in the blood flow and a gradual
accumulation of acid metabolites and free radicals. Without treatment, there is a risk
that the contracture will become chronic and genuine atrophy of the capillary network
may gradually occur.
WHy? To relieve chronic muscle pain.
HOW?
Studying publications about reducing pain by increasing endorphin production shows
that the pulses have to be large enough to excite type Aδ nerve fibres as well as type
Aα, which is shown by the production of muscle twitches. The effects of endorphinic
stimulation are described for frequencies between 2 and 8 Hz. In addition to the general
effect of increasing endorphin production in the hypothalamus, which elevates the pain
perception threshold, there is a very significant localised effect. The 5 muscle twitches
induced every second by stimulation produce very significant hyperaemia, which
drains the acid metabolites and free radicals that had accumulated in the chronically
contractured muscle areas.
PulSe WidtH
Endorphinic stimulation is primarily aimed at the sensitive Aδ nerve fibres which are
best stimulated with pulse width of 200µs. However the vascular effect is secondary
to the co- activation of the motor units, which have a slightly higher chronaxy that is
measured at the start of the session using the mi-SCAN function.
electrOdeS
Electrodes must be placed after a thorough palpatory examination to locate the most
painful point, where a small electrode preferably connected to the positive pole of the
cable will be placed. The other electrode is placed at the end of muscle or muscle group
being stimulated.
iNteNSity
An essential factor in the therapeutic efficacy is to cause visible muscle twitching,
which may, in certain cases, require higher stimulation energies to be used. The mi-
RANGE function can be used to determine the minimum level of energy required to
produce an appropriate muscle response.