Wrist monitors aren't as effective as chest-worn heart monitors, researchers find

As fitness trackers surge in popularity, a new study finds that chest-worn heart monitors are more accurate than wrist-worn monitors.

Chest-worn monitors, which are worn by distance cyclists and other elite athletes, include a transmitter attached to a belt and a receiver worn on the wrist like a watch.

Cleveland Clinic researchers said wrist-worn monitors are fine for recreational use, but to not be alarmed if there is an usually high reading. Take several measurements, they advised.