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The validity and inter-device variability of the Apple Watch™ for measuring maximal heart rate

Abt, Grant; Bray, James; Benson, Amanda Clare

Authors

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Dr James Bray J.Bray@hull.ac.uk
Lecturer in Sport Nutrition & Physiology

Amanda Clare Benson



Abstract

Maximal heart rate (HRmax) is a fundamental measure used in exercise prescription. The Apple Watch measures heart rate yet the validity and inter-device variability of the device for measuring HRmax are unknown. Fifteen participants completed a maximal oxygen uptake test while wearing an Apple Watch on each wrist. Criterion HRmax was measured using a Polar T31 chest strap. There were good to very good correlations between the watches and criterion (left: r = 0.87 [90%CI: 0.67 to 0.95]; right: r = 0.98 [90%CI: 0.94 to 0.99]). Standardised mean bias for the left and right watches compared to the criterion were 0.14 (90%CI: -0.12 to 0.39; trivial) and 0.04 (90%CI: -0.07 to 0.15; trivial). Standardised typical error of the estimate for the left and right watches compared to the criterion were 0.51 (90%CI: 0.38 to 0.80; moderate) and 0.22 (90%CI: 0.16 to 0.34; small). Inter-device standardised typical error was 0.46 (90%CI: 0.36 to 0.68; moderate), ICC = 0.84 (90%CI: 0.65 to 0.93). The Apple Watch has good to very good criterion validity for measuring HRmax, with no substantial under- or over-estimation. There were moderate and small prediction errors for the left and right watches. Inter-device variability in HRmax is moderate.

Citation

Abt, G., Bray, J., & Benson, A. C. (2018). The validity and inter-device variability of the Apple Watchâ„¢ for measuring maximal heart rate. Journal of sports sciences, 36(13), 1447-1452. https://doi.org/10.1080/02640414.2017.1397282

Journal Article Type Article
Acceptance Date Oct 20, 2017
Publication Date 2018
Deposit Date Nov 30, 2017
Publicly Available Date May 31, 2019
Journal Journal of Sports Sciences
Print ISSN 0264-0414
Electronic ISSN 1466-447X
Publisher Taylor and Francis
Peer Reviewed Peer Reviewed
Volume 36
Issue 13
Pages 1447-1452
DOI https://doi.org/10.1080/02640414.2017.1397282
Keywords Intensity; Validity; Reliability; Technology
Public URL https://hull-repository.worktribe.com/output/479678
Publisher URL http://www.tandfonline.com/doi/full/10.1080/02640414.2017.1397282
Copyright Statement This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Sports Sciences on 01/11/2017, available online: http://www.tandfonline.com/10.1080/02640414.2017.1397282
Additional Information Peer Review Statement: The publishing and review policy for this title is described in its Aims & Scope.; Aim & Scope: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=rjsp20

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Copyright Statement
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Sports Sciences on 01/11/2017, available online: http://www.tandfonline.com/10.1080/02640414.2017.1397282






Article (376 Kb)
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Copyright Statement
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Sports Sciences on 01/11/2017, available online: http://www.tandfonline.com/10.1080/02640414.2017.1397282





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