The results of the study showed that the average step counts recorded by different devices were fairly close, ranging from 11,734 to 11,922 steps. The consumer monitors tested in the study generally provided accurate estimates of step counts, and the Charge2 and Apple2 devices performed reasonably well in heart rate estimation. However, all devices underestimated MVPA in real-life situations, which suggests that caution should be exercised when using these devices to track higher-intensity physical activities.
