Data Sheet

biosignalsplux
User Manual
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The maximum voluntary contraction (MVC) will be calculated for each channel based on
the EMG maxima of your selected EMG signals.
The MVC acquisition can also be done in a separate signal acquisition session/file. This
can be useful to use when doing several signal acquisitions to ensure that the analysis of
all files and signals are done with the same reference values – the MVC values.
For this, start an acquisition and acquire your data which are being used as MVC values
for later analysis and save your acquisition. To use the MVC data from this acquisition in
another acquisition, click on the document icon in the CALCULATE FROM A FILE INSTEAD
field and select the OpenSignals (r)evolution file which contains the MVC signal data.
OpenSignals (r)evolution will then calculate the MVC value from the selected file.
Select OpenSignals (r)evolution file to calculate MVC values from file
APDF – AMPLITUDE PROBABILITY DENSITY FUNCTION
After this acquiring the MVC, click on the APDF button to start the amplitude probability
density function. This function calculates the cumulative percentage histogram of the
enveloped data in terms (%) of the MVC and displays if the muscle load that the muscle(s)
are subjected during the current task (represented by the blue lines in the graph) are
causing muscle tiredness (see WARNING ZONE area in Figure 87) or muscle fatigue (see
DANGER ZONE area in in Figure 87). Low to no muscle load will shift the blue line to the
top left corner of the graph, will increasing muscle load and muscle load over duration
will shift the graph into the warning and danger zones.
EFFORT DENSITY (%MVC IN %TIME)
This function displays the cumulated effort in terms (%) of the MVC at 10, 50 and at 90%
of the time (blue lines on chart) and displays all values of all devices and sensors in a
table.