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Scientists at the University of Aberystwyth (Wales) found that all devices costing between US $ 25 and US $ 100 provided inaccurate data when walking and running, Ukr informs. Media.
Dr. Rice Thatcher stated that devices tend to overestimate metrics.
The Fitbit tracking company stated that its product was based on "a large number of studies", while other companies claim that their trackers are "not is a medical device." [19659002] In tests, the researchers measured the amount of oxygen that a person used for ten minutes of walking and running on a treadmill before comparing the results with those of various fitness trackers.
Fitbit Charge 2, one of the most popular fitness trackers on the British market, was accurate enough to measure calories burned during the race, reducing figures by 4%. But during the measurement during the walk, he overestimated the data by more than 50%.
The cheaper devices – Letscom HR and Letsfit – underestimated the number of calories burned during the run by 33% and 40% respectively.
market Letscom overestimated its performance by 15.7%, while Letsfit's result is only 2% higher than actual performance.
"If you want to know the exact number of calories you burn during a workout, no matter what device you use, you have to interpret the data with some caution," said Mr. Thatcher.
He added that the inaccuracies were not as important when the data was used as a motivational tool to track progress.
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