Precor and Fitbit Calorie Estimation

March 21, 2016

Posted in: exercise, fitness, modeling.

I just finished a workout. Summary: 40 minutes of cardio on a Precor AMT. The following images show what was recorded on my Fitbit Surge and the elliptical machine.

presentation image

Figure 1: Fitbit calorie estimation

presentation image

Figure 2: Precor calorie estimation

Presumably, the models are based on different inputs. Both models have my weight. The Precor model probably has a better estimation of the actual force output by my body. The Fitbit has my heartrate and has a noisy estimation of my motion. In any case, they seem pretty close.