8.For a small percentage of people the heart rate variability will not totally disappear with increasing workload. In this case the
...THE OWNZONE LIMITS BASED ON HEART RATE VARIABILITY (OZ.V) VARY CONSIDERABLY?
Heart rate variability reacts sensitively to all changes taking place in the body and environment. The OZ.V heart rate limits are affected by, amongst others, your daily state of fitness, the time of OwnZone determination, the type of exercise and state of mind. The lower limit of the OZ.V heart rate limits can change for the same person by as much as 30 beats.
However it is important that the feeling of exercise carried out in the OwnZone is light or moderate. For example if you raise your heart rate too rapidly after the first stage, you may get too high OwnZone heart rate limits. If the OwnZone limits seem to be too high we recommend that the OwnZone determination is done again.
... SOME OTHER PERSON USES MY POLAR M21 OR POLAR M22 HEART RATE MONITOR?
Polar Heart Rate Monitor determines the OwnZone heart rate limits on the basis of heart rate and age. If someone else uses your Polar M21 or Polar M22 it is necessary to zero the OZ.L heart rate limits which are in the memory. Reset the age in the USER mode.
Even though the user is the same age as you the age must still be reset in order that the OZ.L heart rate limits are zeroed. If this is not done the Polar M21 or Polar M22 may give the following user OwnZone heart rate limits based on your heart rate variability which is stored in the memory of the equipment.
Note that changing the user also affects the calculation of the total calorie expenditure (Tot. KCAL) and cumulative exercise time (Tot. TIME). If these readings are not zeroed when the user changes, the Polar M21 or Polar M22 adds
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