Author + information
- A. Marc Gillinov,
- Muhammad Etiwy,
- Stephen Gillinov,
- Robert Wang,
- Gordon Blackburn,
- Dermot Phelan,
- Penny Houghtaling,
- Hoda Javadikasgari and
- Milind Y. Desai
Background: The accuracy of wrist-worn heart rate (HR) monitors is unconfirmed. We assessed accuracy of 5 wrist-worn HR monitors (Apple Watch, Fitbit Blaze, Garmin Forerunner 235, TomTom Spark Cardio, Scosche Rhythm+) during various types of exercise.
Methods: Fifty volunteers completed exercise protocols on a treadmill, stationary bicycle and elliptical trainer (with and without arm levers). Each participant had HR monitoring with standard ECG, chest-strap monitor (Polar H7), Scosche Rhythm+, and two randomly assigned wearable HR monitors (one per wrist). HR was recorded at rest, light, moderate, and vigorous exercise.
Results: Participants were 54% female (mean age 38 ± 12 years). Across all HR measurements, the chest monitor (Polar H7) had the best agreement with ECG; wrist-worn monitors were less accurate (Figure). Accuracy varied with exercise type. With the treadmill, all devices were acceptable (rc=.88-.93) except the Fitbit Blaze (rc=.76). While biking, the Garmin, Apple Watch and Scosche Rhythm+ were acceptable (rc>.8). With the elliptical trainer without arm levers, only the Apple Watch provided accurate readings (rc=.94). None of the devices gave accurate readings for the elliptical trainer with arm levers (rc <.8).
Conclusions: Wrist-worn HR monitors have variable accuracy. Their accuracy varies with exercise type and is best on the treadmill and worst on the elliptical trainer. Electrode-containing chest monitors should be used when accurate HR measurement is imperative.
Moderated Poster Contributions
Arrhythmias and Clinical EP Moderated Poster Theater, Poster Hall, Hall C
Sunday, March 19, 2017, 12:30 p.m.-12:40 p.m.
Session Title: Novel Arrhythmia Diagnostics, Therapeutics, and “Wearables”
Abstract Category: 7. Arrhythmias and Clinical EP: Sports and Exercise
Presentation Number: 1315M-03
- 2017 American College of Cardiology Foundation