NEW YORK, NY - JUNE 18: The line of Fitbit products are displayed during a lunchtime workout event outside the New York Stock Exchange during the IPO debut of the company on June 18, 2015 in New York City. According to reports, shares of Fitbit, which makes wearable fitness tracking devices, rose significantly on Thursday after debuting as a public company on the New York Stock Exchange. Eric Thayer/Getty Images/AFP == FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==
For young adults on a long-term healthy diet and exercise programme, tracking activity with a wearable device may not lead to additional weight loss, according to a new study.
Over 24 months, people who used wearable activity trackers lost 2.4 kilogrammes (5.29 pounds) less than a group on a similar program but using a website to track their progress.
