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Wrist-based photoplethysmography assessment of heart rate and heart rate variability: Validation of whoop

journal contribution
posted on 03.08.2021, 22:18 by Clint R Bellenger, Dean MillerDean Miller, Shona L Halson, Gregory RoachGregory Roach, Charli SargentCharli Sargent
Heart rate (HR) and HR variability (HRV) infer readiness to perform exercise in athletic populations. Technological advancements have facilitated HR and HRV quantification via photo-plethysmography (PPG). This study evaluated the validity of WHOOP’s PPG-derived HR and HRV against electrocardiogram-derived (ECG) measures. HR and HRV were assessed via WHOOP and ECG over 15 opportunities. WHOOP-derived pulse-to-pulse (PP) intervals were edited with WHOOP’s proprietary filter, in addition to various filter strengths via Kubios HRV software. HR and HRV (Ln RMSSD) were quantified for each filter strength. Agreement was assessed via bias and limits of agreement (LOA), and contextualised using smallest worthwhile change (SWC) and coefficient of variation (CV). Regardless of filter strength, bias (≤0.39 ± 0.38%) and LOA (≤1.56%) in HR were lower than the CV (10–11%) and SWC (5–5.5%) for this parameter. For Ln RMSSD, bias (1.66 ± 1.80%) and LOA (±5.93%) were lowest for a 200 ms filter and WHOOP’s proprietary filter, which approached or exceeded the CV (3–13%) and SWC (1.5–6.5%) for this parameter. Acceptable agreement was found between WHOOP-and ECG-derived HR. Bias and LOA in Ln RMSSD approached or exceeded the SWC/CV for this variable and should be interpreted against its own level of bias precision.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

21

Issue

10

Start Page

1

End Page

12

Number of Pages

12

eISSN

1424-8220

ISSN

1424-8220

Location

Switzerland

Publisher

MDPI

Publisher License

CC BY

Additional Rights

CC BY 4.0

Language

eng

Peer Reviewed

Yes

Open Access

Yes

Acceptance Date

14/05/2021

External Author Affiliations

University of South Australia; Australian Catholic University;

Author Research Institute

Appleton Institute

Era Eligible

Yes

Medium

Electronic

Journal

Sensors

Article Number

3571