Don't believe the calorie counters
Researchers have named a truly working function of fitness trackers
American doctors have evaluated the effectiveness of popular fitness trackers, the results of the study can be found on the EurekAlert portal! (Fitness trackers accurately measure heart rate but not calories burned, study finds).
Scientists analyzed the data obtained during the observations and came to the conclusion that most devices designed to take into account the activity of the owner when doing sports are practically useless for calculating the energy expended (expressed, as a rule, in kilocalories), but they reliably determine the pulse rate.
Graph from the article by Shcherbina et al. Accuracy in Wrist-Worn, Sensor-Based Measurements of Heart Rate and Energy Expenditure in a Diverse Cohort, published in the Journal of Personalized Medicine – VM.
According to researchers, fitness trackers make mistakes in measuring calories burned due to incomplete accounting of the amount of data - height, weight, age and other individual indicators, whereas the pulse is always determined directly.
Experts analyzed the work of seven of the most popular, according to the authors, devices: Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn and Samsung Gear G2. The study involved 60 volunteers.
Portal "Eternal youth" http://vechnayamolodost.ru 25.05.2017