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M450 measures altitude with an atmospheric air pressure sensor and converts the measured air pressure into
an altitude reading. This is the most accurate way to measure altitude and altitude changes (ascent / descent)
after calibration. Ascent and descent are shown in meters/feet. Uphill/downhill steepness is shown in per-
centages and grade, and is only visible during training when using a Speed Sensor Bluetooth® Smart.
To make sure that the altitude reading remains accurate, it needs to be calibrated whenever a reliable ref-
erence, such as a peak or a topographic map, is available or when at sea level. Pressure variations due to
weather conditions, or indoor air-conditioning, may affect altitude readings.
The temperature shown is the temperature of your M450.
Altitude is automatically calibrated with GPS, and it will be shown in gray until it's calibrated. To get the
most accurate altitude readings, it's recommended to always calibrate altitude manually when you know your
current altitude. Manual calibration can be done in the pre-training view or in the training view quick menu. For
more information, see
SMART COACHING
Whether it's assessing your day-to-day fitness levels, creating individual training plans, working out at the
right intensity or receiving instant feedback, Smart Coaching offers a choice of unique, easy-to-use features,
personalized to your needs and designed for maximum enjoyment and motivation when training.
M450 includes the following Smart Coaching features:
Training Benefit
l
Training Load and Recovery (this feature is available in the Polar Flow web service)
l
Fitness Test
l
Orthostatic Test
l
Heart rate zones
l
Smart calories
l
TRAINING BENEFIT
The Training Benefit feature helps you better understand the effectiveness of your training. This feature
requires the use of the heart rate sensor. After each training session you get textual feedback on your per-
formance providing that you have trained at least a total of 10 minutes in the sport zones. The feedback is
based on training time distribution on sport zones, calorie expenditure and duration. In Training Files you get
the feedback in more detail. The descriptions of different training benefit options are listed in the table below
Feedback
Maximum training+
Quick
Menu.
Benefit
That was a hard session! You improved your sprint speed and the
nervous system of your muscles, which make you more efficient.
This session also increased your resistance to fatigue.
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