Precor p20 - Manual (Page 42)

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Operating and Maintaining the P20 Console
Interval 1-1 and Interval 1-2
The Interval programs are primarily for conditioning your
cardiovascular system. These programs are designed to raise
and lower your heart rate in a repeating fashion for a
user-defined period of time by alternating rest and work
intervals. Program intensity is adjustable.
Figure 9: Interval 1-1
Figure 10: 1-2 Interval
Weight Loss
The program time is fixed at 28 minutes. The program
consists of four intervals, each lasting eight minutes. You can
change the resistance at any time during the work interval.
Figure 11: Weight Loss