How does Atlon measure effort?

Effort is a percentage from your average heart rate during the workout. It’s the share of a reference group whose average heart rate was below yours: an average of 140 bpm gives about 42%, 160 bpm about 71%, and 170 bpm about 88%. It goes from 0 to 99%. It sits next to Work, Form and Calories.

How it works

After every workout, your watch shows four numbers under Effort:

NumberWhat it is
WorkThe share of the workout Atlon detected you working rather than resting.
EffortYour average heart rate, placed on a scale from 0 to 99%.
FormHow sure Atlon was of the exercises it recognised, out of 10.
CaloriesActive calories from Apple Health.

Some examples of average heart rate and the Effort it gives:

Average heart rateEffort
120 bpm23%
140 bpm42%
150 bpm54%
160 bpm71%
165 bpm80%
170 bpm88%

On your iPhone, a workout made of several recordings (warm-up, strength and WOD) gets one Effort. Atlon leaves out strength and warm-ups, because Effort and Work measure conditioning, and combines the rest by length.

The Effort panel in Atlon's results on Apple Watch: Work 61%, Effort 71%, Form 4.7 out of 10 and 164 calories, with heart rate below

Limits

Updated