Does The Fitbit Charge 2 Accurately Measure Heart Rate?

Researchers in Italy and the UK, not too long ago studied the accuracy of the Fitbit Charge 2 fitness tracker in measuring heart charge. The worldwide market for fitness trackers is booming. In response to the research firm IDC, over a hundred million trackers have been offered in 2016 alone. These units not solely attraction to critical and recreational athletes; medical researchers have also begun using trackers to assist in their study of areas as diverse as exercise, metabolism, neurology, asthma, and most cancers. One in every of the important thing measures that a fitness tracker must report is heart charge, which is measured in beats per minute (bpm).

Heart charge is just not only a necessary indicator of exercise intensity but additionally of how sleep, stress, illness, and the remedy can affect the physique. Each participant rode a stationary bike, with instructions to raise their heart charge to as excessive a degree as potential. They had been free to decelerate and rest at any time, because the aim of the examine was to measure the heart charge accuracy of the Fitbit Charge 2, not coaching technique or effectiveness.

Each participant wore a Fitbit Charge 2 on their non-dominant wrist, while at the same time, they have been additionally hooked up to a precise clinical measuring system, the ProComp Infiniti T7500M, which was acted as the control on this study. Heart rate was measured on each device for ten minutes, and the results were in contrast. The research confirmed that the Fitbit Charge 2 underestimated coronary heart rate and that this error was constant regardless of the heart rate of the study subjects. While the imply underestimation was relatively low, at -5.9 up, the underestimation for a few of the subjects was presumably as nice as 30 bpm, suggesting that the precision of this tracker was poor.

The applying to users is that the Fitbit Charge 2 might not be useful for serious train or medical analysis, resulting from its doubtlessly poor precision in measuring heart price. However, more research is required to find out the source of this imprecision. Some attainable factors for these future research embrace the type of train and the positioning of the tracker. As well, the comparability of the Fitbit Charge 2 with different fitness trackers available on the market was also identified as a future analysis aim by the research authors. Reference: Benedetto et al. “Assessment of the Fitbit Charge 2 for monitoring heart rate” PLoS ONE 13(2): e0192691.

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