User Manual

11
HEART RATE TRAINING
Although there are many subjective clues as to how your body is doing during exercise (perceived exertion,
breathing rate, physical sensations), none of them are as reliable as measuring heart rate. It is objective and
affected by both internal and external factors—meaning that you will have a dependable measure of your
physical state.
MEASURING HEART RATE WITH YOUR OH1
To measure heart rate accurately you need to wear your
OH1 snugly around your forearm or upper arm (see the
picture on the right). The sensor on the back must be in
constant touch with your skin, but the armband should
not be too tight to prevent blood flow. For most accurate
heart rate measurement, we advise you to wear your
OH1 for a few minutes prior to starting the heart rate
measurement.
If you have tattoos avoid placing the sensor right on
them it as it may prevent accurate readings.
Also it's a good idea to warm up the skin if your hands
and skin get cold easily. Get the blood going before
starting your session!
START A TRAINING SESSION
Wear the OH1 around your forearm or upper arm, for
details see "Wearing your OH1" on page7
START A TRAINING SESSION AS AN
INDEPENDENT TRAINING DEVICE
Before using OH1 as an independent training device, it
needs to be registered and linked to Polar Flow account. For details, see "Setting up your OH1" on page4.
1. Press the button until the lights are switched on, and release. OH1 is now on.
2. Once on, press the button twice to switch recording on.
3. When your heart rate is detected, the green light LED will blink rapidly, and you can start your session.