decreasing your heart rate.

8.For a small percentage of people the heart rate variability will not totally disappear with increasing workload. In this case the age-predicted limits are the best estimation for the exercising zone.

...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.

... THERE IS NO HEART RATE READING (- -)?

1.Check that the electrodes of the transmitter are moistened and that you are wearing it as instructed.

2.Check that you have kept the transmitter clean.

3.Check that there are no sources of electromagnetic radiation in the close vicinity of the Polar wrist receiver, such as TV sets, mobile phones, CRT monitors etc.

4.Have you had a cardiac event which may have altered your EKG waveform? In this case consult your physician.

...HEART SYMBOL FLASHES IRREGULARLY?

1.Check that your Polar wrist receiver is inside the transmission range and not further that 3 feet/ 1 metre from the Polar transmitter you are wearing.

2.Check that the elastic strap has not become loose during exercise.

3.Make sure that the electrodes of the transmitter are moistened.

4.Make sure that there is no other heart rate transmitter

50

within the reception range (3 feet/ 1 metre).

5.Cardiac arrythmia may cause irregular readings. In this case consult your physician.

...OTHER PERSON WITH HEART RATE MONITOR IS CAUSING INTERFERENCE?

Your training partner may have coincidentally activated exactly the same code as you. In this case keep distance to your training partner or proceed as follows:

1.Stop the stopwatch and heart rate measurement.

2.Take the transmitter off your chest for 10 seconds.

3.Put the transmitter back and start the heart rate measurement again.

... HEART RATE READING BECOMES ERRATIC OR EXTREMELY HIGH?

You may have come within range of strong electromagnetic signals which cause erratic readings on the wrist receiver display. Check your surroundings and move further away from the source of disturbance.

... THERE ARE NO REACTIONS TO ANY BUTTONS?

Reset the Polar heart rate monitor. Resetting clears watch settings which will return to the default settings. User information and measurement options settings will be saved.

1.Press the RESET button with a pen tip. Display becomes full of digits.

2.Press any of the four button once.

The Polar heart rate monitor enters the Time of day display.

If you don’t press any button after reset within one minute the wrist receiver goes to the battery saving mode.

... THE DISPLAY IS BLANK OR FADING?

The Polar heart rate monitor is in battery saving mode when it leaves the factory. Wake up by pressing the OK button twice.

The Polar heart rate monitor enters the Time of day display.

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Polar M91TI There is no Heart Rate Reading -?, Heart Symbol Flashes IRREGULARLY?, There are no Reactions to ANY BUTTONS?