Polar F55 user manual Moderate

Models: F55

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Light

Exercising in the Light* intensity zone (60-70% HRmax) is good for improving health and fitness. It also improves basic endurance and helps you to recover from heavier exercise.

Moderate

Exercising in the Moderate intensity zone (70-80% HRmax) is effective particularly for improving aerobic fitness. All programs include exercise in this intensity zone.

Hard

The Hard intensity zone (80-90% HRmax) is for relatively short exercise at high intensity. Exercising in this zone causes heavy breathing, muscle tiredness, and fatigue. It increases maximum performance capacity. Only Improve and Maximize Programs include exercise in this intensity zone.

Press OK to view the target exercise durations in different intensity zones.

Intensity zone name

Graphical bar of the intensity zone is highlighted

Target exercise duration in the selected intensity zone

To view the information for the other intensity zones, press the / buttons.

Press the Back button to return to the Weekly HR zones view.

Press the button to proceed.

*Polar target heart rate intensity definition is modified from international exercise science authorities’ recommendations in which Light intensity can reach lower than 60% HRmax.

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Page 24
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Polar F55 user manual Moderate