Operation Manual

MyotonPRO User Manual
Page 13 of 108
A diagram of the measuring process:
The measuring process of the Muscle consists of the following:
1. Constant pre-pressure
4
is applied to the skin surface above the Muscle being measured,
thereby slightly compressing the subcutaneous superficial tissues.
2. On the Muscle located under the subcutaneous compressed tissues, a light, quick-released
mechanical impulse is exerted by the Device at constant mechanical force.
3. The Muscle responds to the exterior mechanical impulse by a damped natural oscillation.
The Co-oscillation of the:
a. Muscle being measured,
b. compressed subcutaneous superficial tissues above it,
c. Probe
are recorded by an accelerometer in the form of an acceleration graph.
4. From the raw signal obtained above in step 3, the low and high frequencies that are not
characteristic of soft biological tissue’s natural oscillation are then filtered out.
5. On the basis of the processed oscillation signal, numerical values showing tension of the
Muscle as well as its biomechanical and viscoelastic properties are then calculated.
The mechanical impulse exerted on the Muscle is of short duration (15ms) and involves minimal
mechanical force (pre-load 0.18 + impulse 0.40 = 0,58[N]) hence, it does not cause residual
mechanical deformation to nor neurological reaction of the Object being evaluated.
Recording the Muscle’s natural oscillations through the subcutaneous superficial tissues
located on top of it is possible, as:
a) during the measuring process, the subcutaneous superficial tissues are compressed by
means of the probe at constant pre-pressure,
b) the oscillating mass of the Muscle being measured is larger than the oscillating mass of the
superficial tissues on top,
4
Constant pre-pressure is necessary for compressing subcutaneous tissues which allows for registering the damping
natural oscillation of the muscle through the skin and subcutaneous tissues. Pre-pressure (pre-load force) of 0.18N is not
changeable by the user.