O W N Z O N E M E T H O D S
Polar M71 ti uses multiple methods for determining your safe OwnZone. The primary method is to measure and analyze the heart rate variability and thereby determine the most individual and current parameters.
If your heart rate exceeds the safety limit during the determination, Polar M71 ti picks up your latest OwnZone definition based on heart rate variability. Alternatively, if there is no previous determination in memory, Polar M71 ti will automatically calculate Target Zone limits which are based on your age predicted maximum heart rate. These methods ensure the safest possible exercising zone determination for you.
The method used in defining the exercising Target Zone is indicated after the two beeps as follows:
1.O.Z.V (OwnZone Variability) and the currently determined OwnZone limits appear on the illuminated display.
2.O.Z.L (OwnZone Latest) and your previously determined OwnZone limits appear on the illuminated display.
3.O.Z.A (OwnZone Age) and your
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