Examining Apple Watch Performance
A peer-reviewed study conducted by researchers at the University of Mississippi reviewed 56 studies comparing Apple Watch fitness tracking to medical-grade devices. The study revealed both positive and cautionary findings.
Heart Rate and Step Count Accuracy
One of the key takeaways from the study was the high accuracy of Apple Watches in tracking heart rate and counting steps. The mean absolute percent error (MAPE) for heart rate was 4.43% and for step count was 8.17%, both well below the 10% threshold for defining excellent performance in consumer wearables.
While there have been gradual improvements in the technology over time, the study highlighted Apple's consistent efforts to refine its tracking capabilities.
Calories Burned Accuracy
However, the study also pointed out that smartwatches, including Apple Watch, still struggle with accurately estimating energy expenditure and calories burned. The average error rate for calorie measurements was 27.96%, showing room for improvement in this area.
Key Takeaways
While Apple Watches excel at heart rate and step count tracking, they may not be as reliable for precise calorie measurements. It's recommended to use the Apple Watch as a guide for fitness tracking and motivation, rather than relying on it for exact measurements.
Ultimately, smartwatches like the Apple Watch can be valuable tools for logging workouts, monitoring progress, and staying consistent with fitness goals.
