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Preferred sleep time
Set Your preferred sleep time to define how long you aim to sleep every night. By default, it is set to the average
recommendation for your age group (eight hours for adults from 18 to 64 years). If you feel that eight hours of sleep is too
much or too little for you, we recommend you adjust your preferred sleep time to meet your individual needs. By doing this,
you’ll get accurate feedback on how much sleep you got in comparison to your preferred sleep time.
Maximum heart rate
Set your maximum heart rate, if you know your current maximum heart rate value. Your age-predicted maximum heart rate
value (220-age) is displayed as a default setting when you set this value for the first time.
HRmax is used to estimate energy expenditure. HRmax is the highest number of heartbeats per minute during maximum
physical exertion.The most accurate method for determining your individual HRmax is to perform a maximal exercise stress
test in a laboratory. HRmax is also crucial when determining training intensity. It is individual and depends on age and
hereditary factors.
Resting heart rate
Your resting heart rate is the lowest number of heartbeats per minute (bpm) when fully relaxed and without distractions.
Your age, fitness level, genetics, health status and sex affect the resting heart rate. A typical value for an adult is 55–75
bpm, but your resting heart rate can be significantly lower than that, for example, if you’re very fit.
It’s best to measure your resting heart rate in the morning after a good night’s sleep, right after you wake up. It’s OK to go to
the bathroom first if it helps you to relax. Don’t do any strenuous training leading up to the measurement and make sure
you’re fully recovered from any activity. You should do the measurement more than once, preferably on consecutive
mornings, and calculate your average resting heart rate.
To measure your resting heart rate:
1. Wear your watch. Lie down on your back and relax.
2. After about 1 minute, start a training session on your wearable. Choose any sport profile, for example Other indoor.
3. Lie still and breathe calmly for 3–5 minutes. Don’t look at your training data during the measurement.
4. Stop the training session on your Polar device. Sync the wearable with the Polar Flow app or web service and check
the training summary for the value of your lowest heart rate (HR min)—this is your resting heart rate. Update your
resting heart rate to your physical settings in Polar Flow.
VO2max
Set your VO2max.
VO2max (maximal oxygen uptake, maximal aerobic power) is the maximal rate at which oxygen can be used by the body
during maximal exercise; it is related directly to the maximal capacity of the heart to deliver blood to the muscles. VO2max
can be measured or predicted by fitness tests (e.g. maximal exercise tests and submaximal exercise tests). You can also
use your Running Index score, which is an estimation of your VO2max. You can use the Polar Fitness Test with wrist-based
heart rate feature to estimate your VO2max and update it to your physical settings.
I wear my watch on
Choose Left hand or Right hand.
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