Heart Rate Zone Calculations - Garmin Forerunner 910XT Owner's Manual

Heart rate Zone Calculations

Zone % of
Maximum
Heart rate
1 50–60%
2 60–70%
3 70–80%
4 80–90%
5 90–100%
Appendix
Perceived Exertion
Relaxed, easy pace, rhythmic
breathing
Comfortable pace, slightly deeper
breathing, conversation possible
Moderate pace, more difficult to
hold conversation
Fast pace and a bit
uncomfortable, breathing forceful
Sprinting pace, unsustainable
for long period of time, labored
breathing
Benefits
Beginning-level aerobic training,
reduces stress
Basic cardiovascular training,
good recovery pace
Improved aerobic capacity,
optimal cardiovascular training
Improved anaerobic capacity and
threshold, improved speed
Anaerobic and muscular
endurance, increased power
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