Cybex 425T Treadmill Owner’s Manual
Program Overview
Page B-4
Speed Interval 2 (P-2)
Program Overview
This program is designed for those wishing to introduce speed into their training. The program uses
exclusively 0% incline with a repeating 1:3 work to rest ratio. Each work segment lasts 15 seconds and
each rest segment lasts 45 seconds. The speeds during the rest segments are at a walking pace while
the speeds in the work segments are approximately triple the rest speed. See table below and Figure 2.
Base Speed / Base Elevation Peak Speed / Peak Elevation
mph % grade mph % grade
Level 1 2.2 0% 6.5 0%
2 2.4 0% 7.0 0%
3 2.6 0% 7.5 0%
4 2.8 0% 8.0 0%
5 3.0 0% 8.5 0%
6 3.2 0% 9.0 0%
7 3.4 0% 9.5 0%
8 3.6 0% 10.0 0%
9 3.8 0% 10.5 0%
10 4.0 0% 11.0 0%
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