But what does the latest research say about how effective they are?
And sales arepredicted to growover the next five years.
The landscape of the market is fast changing.
For years, Fitbit and Garmin were the market leaders.
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They show step counts are generally highly accurate, while heart rate and calories burned are reasonably accurate.
That is when one goes up so does the other, and vice versa.
This suggests they are generally capturing the same information, albeit with slightly different sensitivity.
Evidence for sleep tracking is a little patchier.
Wearables are pretty good at detecting bedtime, wake time, and overall sleep duration.
Another studypublished in September reaffirmed the Apple watchs electrocardiogram feature can detect serious cardiac irregularities.
A similarstudyis currently underway to evaluate Fitbits electrocardiogram feature, but results arent out yet.
Body composition is measured using a method called bioelectric impedance analysis.
The body composition is then calculated using algorithms and the manually entered body weight.
Accuracy and effectiveness aside, wearable users typically report beingsatisfied with their devices.
