biodex 950-387 Application/Operation Manual page 13

CONTENTS
• Speed (Cycles/Second): Located at the top right of the screen. Use the associated L and M icons
to set this goal to match the desired cycles per second.
The step cycle default is 0.10 cycles/sec and the range is 0.1 to 5 cycles/sec. This parameter, in
conjunction with the patient's height, is used to determine belt speed (since walking speed is
determined by step length and step cycle) and is important for developing proper gait patterns.
Changing either the step cycle or target step length will cause the speed of the belt to increase
or decrease. The initial starting speed of 0.1 cycles/sec can easily be adjusted during the exer-
cise session by using the L or M arrows.
NOTE: For visual and audio biofeedback, the treadbelt speed must be greater than 0.8 mph (0.9 kmh, or
0.34 meters/second).
The cycle/sec speed and/or step length regulate the treadbelt speed. If treadbelt speed is below 0.8 mph
(0.9 kmh, or 0.34 meters/second) a message will display noting that the treadbelt is moving too slowly
for biofeedback.
• Step Length: Located at the bottom right of the screen. Use the associated L and M icons on the
right side of the screen to increase or decrease goal value.
• Distance: Located at the top left of the screen, touch <o> to toggle units of measure between
miles, meters and kilometers.
• Speed (Treadbelt Speed): Located at the top left of the screen, touch the solid yellow dot <o>, to
toggle units of measure between KMH, MPH and meters/second.
• Heart Rate: Heart rate monitoring is accomplished by having the subject hold onto both heart
rate handgrips on the front handrail. The heart rate value will be displayed at the top left of the
screen when the handgrips are held.
• Histogram or Footfall: Located at the bottom left of the screen, touch the desired icon to toggle
between these two choices.
Footfalls: Displays alternating right and left targets in the shape of feet. When the patient's
actual footfalls are detected they are displayed with respect to the target. When the patient falls
within the set standard deviation the footfalls are synchronized with the targets and are told
"good job" by the display. Should they fall outside of the SD the footfalls and targets are out
of synch the display will tell the patient which footfall is outside of the standard deviation by
prompting them to go longer or shorter on the respected foot.
NOTE: Because footfalls are projected based on the subject's last step the screen is always one step
behind. This should not be apparent once the subject falls into a rythmic walking pattern. If a step does
not go in front of the opposite step, the target box will not appear.
Histogram: Displays footfalls as a 2-pixel wide dot. The X-axis shows distance traveled in
meters and the Y-axis shows the deviation, where 1 pixel is equal to 1cm of deviation. If the
patient goes beyond the SD, the histogram will deviate from straight path.
NOTE: On the histogram graph, the upper and lower lines are the target step lengths plus/minus the
standard deviation. You will notice that the upper line and lower line are equal to the range of the aver-
age step length.
— 4-5 — GAIT TRAINING MODE