Regular use of wearable trackers that tell people how active they are may not raise exercise levels enough to improve health. So concludes a study that also found financial incentives - such as cash or charity donations - made little difference to the results.
[A woman tying her sneakers while wearing a fitness tracker]
Researchers say wearable activity trackers may not increase physical activity enough to benefit health.

The study - a year-long randomized trial involving 800 full-time workers that was conducted by Duke-NUS Medical School in Singapore - is published in The Lancet Diabetes & Endocrinology.

Pedometers and activity trackers, such as Fitbit, Garmin, Jawbone, and others are rising in popularity.

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