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Forerunner 210 Owner’s Manual 9
Training
1 50–60% Relaxed, easy pace; rhythmic
breathing
Beginning-level aerobic training;
reduces stress
2 60–70% Comfortable pace; slightly
deeper breathing, conversation
possible
Basic cardiovascular training;
good recovery pace
3 70–80% Moderate pace; more difcult to
hold conversation
Improved aerobic capacity;
optimal cardiovascular training
4 80–90% Fast pace and a bit
uncomfortable; breathing forceful
Improved anaerobic capacity
and threshold; improved speed
5 90–100% Sprinting pace, unsustainable
for long period of time; labored
breathing
Anaerobic and muscular
endurance; increased power