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How accurate are the wrist-based heart rate monitors during walking and running activities? Are they accurate enough?
BMJ Open Sport & Exercise Medicine
  • Sarah E. Stahl, University of Nebraska at Omaha
  • Hyun-Sung An, University of Nebraska at Omaha
  • Danae M. Dinkel, University of Nebraska at Omaha
  • John M. Noble, University of Nebraska at Omaha
  • Jung-Min Lee, University of Nebraska at Omaha
Document Type
Article
Publication Date
4-25-2016
Abstract

Background Heart rate (HR) monitors are valuable devices for fitness-orientated individuals. There has been a vast influx of optical sensing blood flow monitors claiming to provide accurate HR during physical activities. These monitors are worn on the arm and wrist to detect HR with photoplethysmography (PPG) techniques. Little is known about the validity of these wearable activity trackers.

Aim Validate the Scosche Rhythm (SR), Mio Alpha (MA), Fitbit Charge HR (FH), Basis Peak (BP), Microsoft Band (MB), and TomTom Runner Cardio (TT) wireless HR monitors.

Methods 50 volunteers (males: n=32, age 19–43 years; females: n=18, age 19–38 years) participated. All monitors were worn simultaneously in a randomised configuration. The Polar RS400 HR chest strap was the criterion measure. A treadmill protocol of one 30 min bout of continuous walking and running at 3.2, 4.8, 6.4, 8.0, and 9.6 km/h (5 min at each protocol speed) with HR manually recorded every minute was completed.

Results For group comparisons, the mean absolute percentage error values were: 3.3%, 3.6%, 4.0%, 4.6%, 4.8% and 6.2% for TT, BP, RH, MA, MB and FH, respectively. Pearson product-moment correlation coefficient (r) was observed: r=0.959 (TT), r=0.956 (MB), r=0.954 (BP), r=0.933 (FH), r=0.930 (RH) and r=0.929 (MA). Results from 95% equivalency testing showed monitors were found to be equivalent to those of the criterion HR (±10% equivalence zone: 98.15–119.96).

Conclusions The results demonstrate that the wearable activity trackers provide an accurate measurement of HR during walking and running activities.

Comments

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:http://creativecommons.org/licenses/by-nc/4.0/

Citation Information
Sarah E. Stahl, Hyun-Sung An, Danae M. Dinkel, John M. Noble, et al.. "How accurate are the wrist-based heart rate monitors during walking and running activities? Are they accurate enough?" BMJ Open Sport & Exercise Medicine Vol. 2 Iss. 1 (2016)
Available at: http://works.bepress.com/danae-dinkel/2/