Don’t rely just on your fitness tracker. It may not help you lose weight
A new study from the University of Pittsburgh suggests that fitness trackers are not as effective as some you think. Instead of motivating you to do more exercise over the day, the two-year survey found the devices were actually less effective at encouraging people to lose weight than simply following a diet and exercise plan, reports the Guardian.
Scientists suspect that people become overly dependent on the gadgets to help them change their health, developing a false sense of security and would do better by relying on simple willpower. The devices by technology firms including Fitbit, Jawbone and Misfit are worn on the wrist or arm, monitor physical activity, steps taken, calories burnt, heart rate and quality of sleep and feed the data directly into a smartphone.
The researchers tracked 470 overweight or obese people, aged 18 to 35, for 24 months. Everyone in the study was put on a low-calorie diet, given an exercise plan and invited to regular group sessions.
After six months, half the group was given a Fit Core armband, which tracks activity and feeds it into a computer programme that also allows people to log their diet. The other half were simply told to monitor their exercise and diet by themselves.
The researchers found that patients given the armbands lost less weight than those who monitored their own activity. The group using the Fit Core gadgets lost an average of 3.5kg over two years, compared with an average 6 kg in the self-monitored group.
The report further said that a spokesperson for Jawbone, which owns BodyMedia, the manufacturer of Fit Core, told, “The results of the study do not suggest that wearable devices should not be used for positive weight loss outcomes.” He added, “In fact, the study demonstrated positive weight loss in both groups. Wearable tech helps to bridge the gap between patients who have access to rather intensive weight loss treatments and the very many who don’t.”
A spokeswoman for Fitbit said, “The researchers point out that a limitation of their work includes the fact that they did not use a modern wearable device such as those offered by Fitbit. The upper arm device used in the study was limited to automatic data collection only.”
“Most wearables today, including those offered by Fitbit, go far beyond data collection, offering individuals real-time access to their information, insights, motivation from associated social networks, and guidance about their health. We would strongly caution against any conclusion that these findings apply to the wearable technology category as a whole,” she added.
The research results have been published in the Journal of the American Medical Association (JAMA).
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