Life Fitness CSX Club Series Operation Manual page 25

EXTREME HEART RATE™
This intense, varied workout is designed to help more experienced users to break through fitness improvement pla-
teaus. The workout alternates between two target heart rates as quickly as possible. The effect is similar to that of run-
ning sprints. The user must wear a Polar telemetry heart rate chest strap or grip the Lifepulse sensors throughout the
workout.
When setting up the workout, the user enters a target heart rate. After a standard three-minute warm-up, the intensity
increases until the user reaches the target heart rate goal of 85% of the theoretical maximum (HRmax). That target rate
is maintained for a stabilizing period. Then, the intensity decreases. When the heart rate falls to the 65% of HRmax goal,
it is maintained there for a stabilizing period. The program repeats the alternating intensity levels, continuing this pat-
tern throughout the duration.
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