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1 Warm-up is a phase of low, gradually rising resistance, which brings the heart rate into the
lower end of the target zone and increases respiration and blood flow to working muscles.
2 Plateau increases the intensity slightly, and keeps it steady, to bring the heart rate to the low
end of the target zone. Check the heart rate at the end of this phase.
3 Interval Training is a series of increasingly steeper hills, alternating with valleys, or stints of
recovery. The heart rate should rise to the high end of the target zone. Check the heart rate
at the end of this phase.
4 Cool-down is a low-intensity phase that allows the body to begin removing lactic acid, and
other exercise by-products, which build up in muscles and contribute to soreness.
Each column, as seen in the WORKOUT PROFILE WINDOW and the chart above, represents
one interval. The overall duration of the workout determines the length of each interval. Each
workout is made up of 20 intervals, so the duration of each interval is equal to the duration of the
entire workout divided by 20.
1 to 9 minutes: A workout with a duration of less than 10 minutes is insufficient for the HILL pro-
gram to complete all four phases adequately. The program, therefore, condenses a workout of
this duration at various stages.
10 to 19 minutes: The interval durations initially are set at 30 seconds for a 10-minute workout.
For every minute over 10, each interval increases by three seconds. A 15-minute workout
consists of 20 intervals at 45 seconds each.
20 to 99 minutes: All intervals last 60 seconds. If the user adds minutes to the pre-set duration
while the workout is in progress, the program adds hills and valleys that are identical to the first
eight intervals of the Interval Training phase. This pattern repeats until the workout is completed.
RANDOM (91TI ONLY)
The RANDOM program creates a terrain of hills and valleys that varies with each workout. More
than one million different patterns are possible.
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