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About calorie estimation
Calories are estimated based on the type of sport, your gender, your weight and the intensity and
duration of the exercise.
24x7 calorie estimation is based on your BMI and then adjusted for steps, active time, sports
activities, etc., to generate a theoretical total for the day. Heart rate is not used during 24x7
calorie counting because it would drain the watch battery too quickly.
Note
: Not all activities are available on all watches.
Running, cycling, swimming, treadmill or indoor cycling
For running, cycling, swimming or treadmill, the calorie calculations are based on metabolic
equivalent of task tables (MET or simply metabolic equivalent).
We use the MET tables of Ainsworth BE, Haskell WL, Herrmann SD, Meckes N, Bassett Jr DR,
Tudor-Locke C, Greer JL, Vezina J, Whitt-Glover MC, Leon AS. 2011 Compendium of Physical
Activities: a second update of codes and MET values. Medicine and Science in Sports and Exercise,
2011;43(8):1575-1581.
Freestyle or gym
Calories for freestyle and gym activities are based on heart rate. For other activities calories are
linked to that specific sport but for freestyle an
d gym, the watch doesn’t know which sport you are
doing. Hence when no heart rate measurement is available, calories are not shown for freestyle and
gym activities.
Tracker
The calorie metric measures how many calories you burn during the day including your basal
metabolic rate (BMR). Your BMR represents the minimum amount of energy that you need to keep
your body functioning, including breathing and keeping your heart beating. Because BMR is
included, your calorie metric in the tracker will be higher than your calorie metric in an activity.
About 24/7 heart rate monitoring
Your TomTom GPS Watch allows you to monitor your heart rate during the day. It takes a reading
every 10 minutes for 24/7 tracking versus every second for sports tracking.
Note
: Continuous heart rate monitoring is only available on watch models with an optical sensor.
Switching on 24/7 heart rate monitoring on your watch
Continuous heart rate monitoring is OFF by default. To switch on 24/7 heart rate monitoring on your
watch, follow these steps:
1.
From the Clock screen, press
DOWN
to open the
SETTINGS
menu.
2.
Select
TRACKER
.
3.
Select
HEART
.
4.
Select
ON
.
5.
Synchronise your watch by connecting it to MySports Connect on your computer or to the
MySports mobile app.
Your watch is now measuring your heart rate when you wear it.
Note
: 24x7 heart rate monitoring requires software version 1.2.0 or higher.
Viewing your heart rate on the MySports website
1.