Resting Heart Rate and Associations With Clinical Measures From the Project Baseline Health Study: Observational...

Area of Science:

• Cardiology
• Wearable Technology
• Health Informatics

Background:

• Resting heart rate (RHR) is a widely used health indicator.
• Previous evaluations of wearable device-measured RHR in large cohorts against baseline characteristics are limited.

Purpose of the Study:

• To validate RHR measured by the Verily Study Watch (VSW) against electrocardiography (ECG).
• To explore associations between device-measured RHR and diverse clinical and demographic factors.

Main Methods:

• Utilized data from the Project Baseline Health Study (PHBS).
• Included participants with simultaneous RHR measurements from both ECG and VSW.
• Analyzed correlations between RHR measures and associations with baseline characteristics.

Main Results:

• High reliability was found between VSW and ECG RHR measurements (intraclass correlation coefficient = 0.946).
• Higher VSW RHR was associated with factors like higher BMI, C-reactive protein, type 2 diabetes, and disability scores.
• Specific characteristics linked to RHR varied between male and female participants in regression analyses.

Conclusions:

• VSW-measured RHR demonstrates excellent correlation with ECG-derived RHR.
• Trends associated with higher RHR were consistent across sexes, but specific influencing factors differed.