Health

Fitness Trackers Bad At MONITORING How Much Energy We Burn

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Fitness trackers may be a trendy way to monitor every step we take, but these devices are actually bad at keeping tabs on how much energy we burn pretty, a new research suggests. NORTH PARK, CA – NOVEMBER 14: Volunteers take part in Fitbit introduces Fitbit Local, free all-levels exercises led by talented community instructors.

A morning bootcamp and yoga exercise program led by Sheri Matthews and Mike Sherbakov The start in San Diego included. Get Together. Sweat Together. SAN DIEGO, CA – NOVEMBER 14: Volunteers be a part of Fitbit introduces Fitbit Local, free all-levels workouts led by talented community coaches. The start in San Diego included a morning hours bootcamp and yoga exercises program led by Sheri Matthews and Mike Sherbakov.

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Get Together. Sweat Together. HOLLYWOOD, CA – NOVEMBER 11: Professional Boxer Miguel Cotto trains with Fitbit Surge in preparation for his combat on Nov. 21 with Canelo Alvarez at Wild Card Boxing Club on November 11, 2015 in Hollywood, California. In the first test, measurements from the fitness trackers deviated from the laboratory results in an average day by underestimating energy expenditure by as much as 278 calorie consumption or overestimating by up to 204 calories. With the second experiment, the devices ranged from 69 to 590 calorie consumption lower than the urine testing.

Underestimating exercise might be in the same way dangerous for a lot of, said Dr. Adam Schoenfeld, a researcher at the University of California, SAN FRANCISCO BAY AREA and author of an editorial accompanying the study in JAMA Internal Medicine. To check the accuracy of fitness trackers for monitoring energy expenditure, Miyachi and colleagues asked nine men and 10 women ages 21 to 50 to wear 12 different devices while participating in both experiments.

Eight devices used in the tests are favored by consumers in Japan: Fitbit Flex, Jawbone Up24, Misfit Shine, Epson Pulsense PS-100, Garmin Vivofit, Tanita AM-160, Omron CalorieScan HJA-403C, and Withings Pulse O2. The other four gadgets have been validated in earlier research: Panasonic Actimarker EW 4800, Suzuken Lifecorder EX, Omron Active style Pro HJA-350IT, and ActiGraph GT3X. For the first experiment, participants went into what’s known as a metabolic chamber, a room specially designed to monitor calories consumed and burned, every day and night. They got three meals, and they can work at a table, exercise on a treadmill, watch tv, do housework, and rest while these were in the area.

It’s possible a few of the underestimation might be due to people getting rid of the devices to bathe or to charge batteries, the authors notice. As well as the small size, other restrictions of the study include its reliance on participants who weren’t obese and who didn’t have health issues that could limit their ability to exercise, the authors also note. Still, the findings suggest that consumers may not have a simple time finding a reliable fitness tracker to monitor exercise, Schoenfeld said. 1. Get the right gear.