Polar Glossary - Polar Electro POLAR M21 User Manual

POLAR GLOSSARY

Indicates an ongoing heart rate measurement.The
heart flashes to the beat of your heart.
In the Time of day mode indicates that the alarm is on.
In the measure mode indicates that the sound signal will
alarm if you are exercising outside your Target Zone.
Progress bullets in the measure mode.
In models M21 and M22 one bullet= 100 kcal energy
expenditure. In models M51 and M52 one bullet= 15
minutes in target zone.
AGE: Insert your age in User settings.
ALARM: Indicates the alarm clock in watch settings.
AM/PM: 12 hour mode of time
AVERAGE Hr: Average heart rate of the exercise.
Electrodes: The grooved areas of the transmitter, against
the skin. Pick up the heart's electrical impulses.
EXERCISE: Heart rate measurement mode, stopwatch is on
and the exercise information is recorded.
EXE.TIME: Total exercise time
FAT: Indicates the fat percentage of the total calorie
expenditure.
FILE: File mode to recall training information
Heart rate: The number of heart beats per minute (bpm)
Heart rate variability: Fluctuations of interbeat intervals.
Heart rate variability of a healthy subject is in general large
in resting conditions and during light exercise. Heart rate
variability gradually disappears when exercise becomes
more intense and heart rate increases.
HRmax: Maximum heart rate
IN ZONE: Exercising time in Target Zone
KCAL: Indicates the energy expenditure of your exercise
session.
LIMITS: Manually set target zone limits are determined as
percentages of age predicted or measured maximum heart
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