The Accuracy of Fitness Bands: How 7 Trackers Stack Up

In the study, performed at Iowa State University, 30 men and 30 women wore eight different fitness trackers all at once, while performing a series of tasks designed by the researchers to take 69 minutes. The researchers also took readings with a metabolic analyzer — a laboratory device that measured the participants' actual energy expenditure based on their oxygen intake. In terms of calories burned, all of the trackers gave readings that were within 10 percent of the participants' actual energy expenditure, as recorded by the metabolic analyzer. "If [consumers] like any typical one, they can use it, because most of the consumer versions accurately measure energy expenditure." Read More http://ift.tt/TlU59L