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Exercise may include some risk, especially for those who have been sedentary.
Before starting a regular exercise program you are recommended to
answer to the following questions for health status checking. If the answer
is yes to any of the questions, we recommend that you consult a doctor
before starting an exercise program.
• Have you been physically inactive 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, heart, blood pressure, psyche,
asthma, breathing etc. medication 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.
Minimising possible risks in exercising
Electromagnetic interference
Disturbances may occur near high voltage power lines, traffic lights,
overhead lines of electric railways, electric bus lines or trams, televisions,
car motors, bike computers, some motor driven exercise equipment or
when you walk through electric security gates. In some cases, mobile
phones may cause interference when starting the heart rate measurement.
Exercise equipment
Several pieces of exercise equipment with electronic or electrical
components such as LED displays, motors and electrical brakes may cause
interfering stray signals. To try to tackle these problems, relocate the Polar
wrist unit as follows:
1. Remove the transmitter from your chest and use the exercise equipment
as you would normally.
2. Move the wrist unit around until you find an area in which it displays no
stray reading or flashing of the heart symbol. Interference is often worst
right in front of the display panel of the equipment, while the left or
right side of the display is relatively free of disturbance.
3. Put the transmitter back on the chest and keep the wrist unit in this
interference-free area as far as it is possible.
4. If the Polar running/cycling computer still does not work with the
exercise equipment, this piece of equipment may be electrically too
noisy for wireless heart rate measurement.
Polar running/cycling computer and interference