Iowa researchers said popular models were at best ‘reasonably accurate,’ but that most were more than 10 per cent out when estimating calories burned.
Researchers tested several of the most popular models, with participants taking part in 13 different activities, including running and playing basketball.
Does your fitness band really work? Scientists analyse tracking tech and find Fitbit and others ‘no more effective than a $25 pedometer’
$99 BodyMediaFIT was top, but still had a 9.3 error rating
Fitbit Zip and Fitzip One next most accurate
All but one band was more than 10 per cent out when estimating calories burned