biodex 950-401 Application/Operation Manual page 28

Heart Rate: Heart rate monitoring is accomplished by having the patient hold onto both
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heart rate handgrips on the front handrail. The heart rate value will be displayed at the
top of the screen when the handgrips are held.
Histogram or Footfall: Located at the bottom left of the screen, touch the desired icon to
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toggle between these two choices.
Footfalls
When the patient's actual footfalls are detected, they are displayed with respect to the step
length lines. When the patient falls within the set step length tolerance as set in biofeedback
option, the footfalls are synchronized with the target and the message GOOD JOB will show in
the display. Should they fall outside of the step length tolerance, the display will tell the patient
what footfall is outside of the range by displaying a prompt to go longer or shorter on the
respected foot or feet (Figure 2.11).
NOTE: Because footfalls are projected based on the patient's last step the screen is always one
step behind. This should not be apparent once the patient falls into a rhythmic walking
pattern. If a step does not go in front of the opposite step, the target box will not appear.
Histogram
The Histogram displays footfalls as a two-pixel wide dot. The X-axis shows distance traveled
and the Y-axis shows the deviation, where 1 pixel is equal to 1cm of deviation. If the patient
goes beyond the Standard Deviation (SD), the histogram will deviate from straight path.
NOTE: On the histogram graph, the upper and lower horizontal green lines are the target step
length area, plus or minus the step length tolerance. The Step Length Tolerance Range can be
adjusted in the Biofeedback Options screen (from the Patient Setup screen).
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Biodex Medical Systems, Inc. © 2017