Fitness trackers may not be as accurate as hoped

Those fitness trackers that many people depend on to keep an eye on their level of activity may not be as accurate as hoped, according to a recent study.

Before you pat yourself on the back for the level of activity recorded by your fitness tracker, you may want to take these metrics with a pinch of salt. Kinesiologists at Iowa State University tested a selection of fitness trackers with a few different daily activities.

The Fitbit Flex, Nike+ FuelBand SE, Jawbone UP 24 and Misfit Shine, as well as two monitors normally used in research - the BodyMedia Core and Actigraph GT3X+ were put through their paces.