Myzone estimates caloric expenditure using an equation that was developed in a study published in the Journal of Sports Sciences.
The equation takes into consideration the user’s sex, weight, age, and heart rate.
Men: C/min = (-55.0969 + 0.6309 x HR + 0.1988 x weight + 0.2017 x age) / 4.184
Women: C/min = (-20.4022 + 0.4472 x HR - 0.1263 x weight + 0.074 x age) / 4.184
Things to Know:
- Calories measurements are an estimate. Trackers such as Fitbit, Apple Watch, and others use different equations, so you will notice calorie burn may vary between devices.
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Myzone does not track calories below 50% of your MHR. The equation is most accurate at moderate to intense activity so calories will only be calculated above 50% (grey-red zones).
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The linear nature of the calorie calculation formula may not account for the nonlinear nature of human metabolism across different exercise intensities.
Things to consider:
- Intensity of Workouts (Heart Rate Zones): Variations in calories between different devices might be more significant in certain intensity zones.
- Duration of Workouts: The length of the workout might affect accuracy, as longer sessions could amplify variance in minute-by-minute calculations.
- Heart Rate Variability: Significant differences between average and peak heart rates during workouts might indicate variable intensity levels that could affect calorie calculation.