POLAR M21 - Manual (Page 47)

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• Have you not exercised for the past 5 years?
• Do you have high blood pressure?
• Do you have high blood cholesterol?
• Do you have symptoms of any disease?
• Are you taking any blood pressure or heart medication?
• Do you have a history of breathing problems?
• Are you recovering from a serious illness or medical
treatment?
• Do you use a pacemaker or another implanted
electronic device?
• Do you smoke?
• Are you pregnant?
Note that in addition to exercise intensity, medications for
heart, blood pressure, psyche, asthma, breathing etc. as
well as some energy drinks, alcohol and nicotine, can affect
heart rate.
It is important to be sensitive to your body’s
reactions during the exercise. If you feel unexpected
pain or tiredness regarding your exercise intensity level, it is
recommended to stop the exercise or continue at a lighter
intensity.
If you are allergic to any substance that comes into
contact with the skin, check the Polar heart rate monitor
materials from the “Technical specifications” chapter. It is
recommended that you wear the transmitter against your
bare skin to ensure flawless operation. However, if you
wish to wear the transmitter over a shirt, moisten the shirt
well under the electrodes.
Notice to persons with pacemakers, defibrillator or
other implanted electronic device. Persons who have a
pacemaker use the Polar Heart Rate Monitor at their own
risk. Before starting use, we always recommend an exercise
test under doctor’s supervision. The test is to ensure the
safety and reliability of the simultaneous use of the
pacemaker and the heart rate monitor.
The combined impact of moisture and intense
abrasion may cause a black color, which might stain
light-colored clothes especially, to come off the
transmitter's surface.
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