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In addition to exercise intensity, medications for
heart conditions, blood pressure, psychological
conditions, asthma, breathing, etc., as well as
some energy drinks, alcohol, and nicotine may
also affect heart rate.
It is important to be sensitive to your body’s
responses during exercise. If you feel
unexpected pain or excessive fatigue when
exercising, it is recommended that you stop
the exercise or continue at a lighter
intensity.
Note! If you are using a pacemaker, you can
use Polar training computers. In theory
interference to pacemaker caused by Polar
products should not be possible. In practice no
reports exist to suggest anyone ever having
experienced interference. We cannot however
issue an official guarantee on our products'
suitability with all pacemakers or other
implanted devices due to the variety of devices
available. If you have any doubts, or if you
experience any unusual sensations while using
Polar products, please consult your physician or
contact the implanted electronic device
manufacturer to determine safety in your case.
If you are allergic to any substance that
comes into contact with your skin or if you
suspect an allergic reaction due to using the
product, check the listed materials in
Technical Specifications. To avoid any skin
reaction to the heart rate sensor, wear it over a
shirt, but moisten the shirt well under the
electrodes to ensure flawless operation.
The combined impact of moisture and intense
abrasion may cause a black color to come off the
heart rate sensor’s surface, possibly staining
light-colored clothes. If you use perfume or insect
repellent on your skin, you must ensure that it does
not come into contact with the training computer or
the heart rate sensor.
Using RCX5 Training Computer in water: The
training computer and heart rate sensor are
water resistant, and can be used in water
activities. Other compatible sensors are water
resistant, and can be used in rainy weather. The
training computer may be worn when swimming.
It is not, however, a diving instrument. To
maintain water resistance, do not press the
buttons of the training computer under water.
To maintain the water resistance, do not wash
the training computer or the sensors with a
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