The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: All relevant data are within the paper and its Supporting Information files.įunding: This work was supported by TSW XP Lab, which only provided financial support in the form of authors’ salaries and/or research materials. Received: AugAccepted: JanuPublished: February 28, 2018Ĭopyright: © 2018 Benedetto et al.

PLoS ONE 13(2):Įditor: Yih-Kuen Jan, University of Illinois at Urbana-Champaign, UNITED STATES Although the mean bias in measuring heart rate was a modest -5.9 bpm (95% CI: -6.1 to -5.6 bpm), the limits of agreement, which indicate the precision of individual measurements, between the Fitbit Charge 2 and criterion measure were wide (+16.8 to -28.5 bpm) indicating that an individual heart rate measure could plausibly be underestimated by almost 30 bpm.Ĭitation: Benedetto S, Caldato C, Bazzan E, Greenwood DC, Pensabene V, Actis P (2018) Assessment of the Fitbit Charge 2 for monitoring heart rate. Results showed that the Fitbit Charge 2 underestimates the heart rate. Fifteen healthy participants were asked to ride a stationary bike for 10 minutes and their heart rate was simultaneously recorded from each device.

Since accurate heart rate monitoring is essential in fitness training, the objective of this study was to assess the accuracy and precision of the Fitbit Charge 2 for measuring heart rate with respect to a gold standard electrocardiograph. Fitness trackers are devices or applications for monitoring and tracking fitness-related metrics such as distance walked or run, calorie consumption, quality of sleep and heart rate.

Fitbit charge hr 2