Version 1.9 Page 138 of 170
5.1.6 GAITR IN AND OUT FILTER
Because of the particular configuration of the OptoGait hardware bars with sensors for detecting
interruptions set at a few millimetres from the ground, in some cases the results will not correspond
or match the power and/or pressure blocks, which by default are set at ground level.
In fact, when the heel of the foot touches ground during the Load Response phase, the LED is
interrupted a few milliseconds before contact with the ground and similarly, when the toe is lifted
from the ground during the Pre-Swing phase, interruption is postponed.
If this feature is necessary (e.g. for validation and comparison tests) use this parameter, which
increases the MINIMUM number of LEDs to be interrupted for triggering the contact event.
Setting, for example, the parameter at 3 LEDs, only when 4 consecutive LEDs are interrupted (and
not only 1, as by default), the support is considered valid. The gap between the lighting of N LEDs
instead of only one allows to decrease (or eliminate, if possible) the discrepancies with the
measurement on blocks.
The parameter can be set in the test definition or in the parameters of the single trial in the Results
module.
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