Fitness trackers �poor at measuring calories burned�

Tuesday, May 30, 2017

Most fitness trackers are good at measuring heart rate, but poor at measuring calories burned, a study suggests. As a result, people should be cautious about using them to judge what to eat, Stanford University scientists said.

The study recommended that companies release data showing how their devices work out measurements.

The accuracy of seven wrist devices were tested while 60 volunteers were asked to walk, run and cycle. Researchers found that six out of seven of the fitness devices were good at estimating the heart rate of the person wearing it, with an error rate of under five percent.

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