Footfalls/Histogram Screen Parameters - biodex 950-401 Application/Operation Manual

Footfalls/Histogram Screen Parameters

Touch <Next> at the Patient Setup screen to advance to the Footfalls/Histogram screen. At this
screen, users can view patient progress via either a footfall or histogram display. Touch the
appropriate icon at the bottom of the left to toggle between display formats. With either
display, the following parameters can be adjusted at any time as follows:
Walking Speed (mph): Located at the top right of the screen. Use the associated <▲>
●
and <▼> icons to set this goal to match the desired cycles per second.
Note: The walking (gait) speed can be increased in two ways: Increase the step
frequency (step cycle) or increase the step length.
Walking speed is displayed in MPH or KMH. The default value depends upon how the
Gait Trainer is set up (English or Metric). Most people can relate better to MPH or KMH
than cycles per second. To determine what the cycles/second are, toggle the speed on
the left. When step length is increased or decreased, the green lines will move up or
down. The patient's goal is to place their foot between the lines. The numeric bars
show the real time average of the last five step lengths for the respective side. Two
vertical green bars are displayed if the patient is stepping within the lines (Figure 2.12),
and change to orange when the footfall is too short (Figure 2.11).
Clinical tip: Increase the step length to challenge the patient to take longer steps.
NOTE: For visual and audio biofeedback, the treadbelt speed must be greater than 0.3
mph (0.48 kmh).
A step cycle is a successive heel strike for the same foot (i.e., right step, left step, right
step). Set the treadbelt speed based on how many complete successive heel strikes
occur within a second. 0.1 cycles per second is very slow; 3 cycles is fast. A normal
walking step cycle approximates 1 cycle per second.
The cycle/sec speed and step length settings regulate the treadbelt speed. If the
treadbelt speed is below 0.3 mph (.48 kmh), a message will display noting that the
treadbelt is moving too slowly for biofeedback.
Time: Located at the top left of the screen, counts down from the timing set at the
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Patient Setup screen.
Step Length: A range equaling [Leg length (cm) x .69] to [Leg length (cm) x .86]. Step
●
Target is placed within this range plus or minus the entered standard deviation.
Located at the bottom right of the screen. Use the associated <▲> and <▼> icons on
the right side of the screen to increase or decrease goal value.
Note: A Step Target is a theoretical footfall area based on calculated step length. When
the step target distance is increased, the treadbelt moves faster because steps need to
become longer. If target distance is decreased, treadbelt speed decreases because steps
need to become shorter.
Distance: Located at the left of the screen, touch the blue dot <o> to toggle units of
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measure between miles, meters, and kilometers.
Speed (Treadbelt Speed): Located at the left of the screen, touch the blue dot, to toggle
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units of measure between KMH, MPH, and meters/second.
GAIT TRAINER 3 (v3.X SOFTWARE) 27