Study: Fitness Trackers Suck at Measuring Calories Burned
Fitness trackers can give yous an idea of how many calories you burned during a workout or unabridged day — but don't look those measurements to exist accurate.
Researchers at Stanford University School of Medicine studied seven popular fitness trackers and found that "none of [them] measured energy expenditure accurately," according to a news release. That finding applies to the Apple Spotter, Footing Summit, Fitbit Surge, Microsoft Ring, Mio Alpha two, PulseOn, and the Samsung Gear S2.
The squad institute that even the almost authentic of those devices was notwithstanding off "past an average of 27 per centum." The least accurate was off by an impressively bad 93 percent.
"People are basing life decisions on the data provided by these devices," the study'due south senior writer Euan Ashley, a professor of cardiovascular medicine, genetics, and biomedical data science at Stanford, said in a statement. But doing so might not be a wise determination.
Ashley and the team enlisted lx volunteers — 31 women, 29 men — who wore the vii devices while walking or running on treadmills or using stationary bikes. They measured each volunteer'south center rate with a medical-course electrocardiograph and measured their metabolic rate with an musical instrument used for measuring the oxygen and carbon dioxide in breath. The researchers then compared the results from the wear devices with the measurements from the ii "gold standard" instruments.
The team found that six out of the seven devices measured heart rate "inside v percent." It was a very unlike story for their measurements of calories burned.
"The centre charge per unit measurements performed far ameliorate than we expected," Ashley said, "but the energy expenditure measures were way off the marking. The magnitude of merely how bad they were surprised me."
And then according to the release, "basing the number of doughnuts yous eat on how many calories your device says you burned is a really bad thought."
A paper reporting the researchers' findings was published Wednesday in the Periodical of Personalized Medicine.
Almost Angela Moscaritolo
Source: https://sea.pcmag.com/fitbit-surge-2/15781/study-fitness-trackers-suck-at-measuring-calories-burned
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