biodex 950-400 Operation Manual page 17

CONTENTS
• Speed (mph): 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.
Walking speed is displayed in MPH or KMH. The default value will be according to how the
Gait Trainer is set up (English or Metric). Most people can relate better to MPH or KMH, than
cycles per second. If you want to know 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 5 step lengths for the respective side. Green bars are good as the patient is stepping within
the lines, Blue will show when the footfall is too short.
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).
The cycle/sec speed and/or step length regulate the treadbelt speed. If treadbelt speed is below 0.3 mph
(.48 kmh) 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: When the patient's actual footfalls are detected they are displayed with respect to the
line. When the patient falls within the set step length tolerence as set in biofeedback option, the
footfalls are synchronized with the target and are told "good job" by the display. Should they
fall outside of the step length tolerence, the display will tell the patient which footfall is outside
of the range 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
step length tolerence. 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