Accuracy of the Garmin 920 XT HRM to perform HRV analysis

Abstract

Heart rate variability (HRV) analysis is widely used to investigate autonomous cardiac drive. This method requires periodogram measurement, which can be obtained by an electrocardiogram (ECG) or from a heart rate monitor (HRM), e.g. the Garmin 920 XT device. The purpose of this investigation was to assess the accuracy of RR time series measurements from a Garmin 920 XT HRM as compared to a standard ECG, and to verify whether the measurements thus obtained are suitable for HRV analysis. RR time series were collected simultaneously with an ECG (Powerlab system, AD Instruments, Castell Hill, Australia) and a Garmin XT 920 in 11 healthy subjects during three conditions, namely in the supine position, the standing position and during moderate exercise. In a first step, we compared RR time series obtained with both tools using the Bland and Altman method to obtain the limits of agreement in all three conditions. In a second step, we compared the results of HRV analysis between the ECG RR time series and Garmin 920 XT series. Results show that the accuracy of this system is in accordance with the literature in terms of the limits of agreement. In the supine position, bias was 0.01, - 2.24, + 2.26 ms; in the standing position, - 0.01, - 3.12, + 3.11 ms respectively, and during exercise, - 0.01, - 4.43 and + 4.40 ms. Regarding HRV analysis, we did not find any difference for HRV analysis in the supine position, but the standing and exercise conditions both showed small modifications.

Bayesian Estimation of Correlation between Measures of Blood Pressure Indices, Aerobic Capacity and Resting Heart Rate Variability Using Markov Chain Monte Carlo Simulation and 95% High Density Interval in Female School Teachers

“…In 2016, Hernando et al [ 14 ] validated the Polar RS800 for HRV analysis during rest and exercise, the results of the study showing a valid and reliable recording during rest with some variation during exercise. Similar results were reported in 2017 by Cassirame et al [ 15 ], who conducted a study examining the accuracy of the Garmin 920XT HRM compared to the standard ECG recording. They did not report differences in HRV analysis in resting supine position, whereas differences were observed in the exercise condition.…”

“…Garmin 920XT (Garmin Ltd., Olathe, KS, USA) was used to record HRV in the resting supine position prior to the aerobic capacity test. The Garmin 920XT has been reported to have high HRV accuracy compared to ECG measurements when recording at rest in the supine position [ 15 ]. Prior to measuring HRV, Garmin HRM-Tri was placed around the center of the chest and below the level of the breasts.…”

Dynamical heart beat correlations during running

“…During exercises, heart rate (HR), RR intervals (RRI), running velocity and distance were recorded using a Garmin heart rate monitor HRM4-Run and a GPS watch (Forerunner 935, Garmin Inc., Olathe, KS, USA). A previous study has investigated and validated the accuracy of this HRM 15 . The data were recorded by the GPS watch in the Flexible and Interoperable Data Transfer (FIT) format 16 and subsequently uploaded by the subjects to a web service that we had launched for this study.…”

Effects of R-R time series accuracy on heart rate variability indexes

“…Seventy-five R-R interval time series of 512 inter-beat length were obtained using a standard ECG (BioAmp and Powerlab system, AD Instruments, Castell Hill, Australia) connected to a computer equipped with LabChart software (version 7) (Cassirame, Vanhaesebrouck, Chevrolat, & Mourot, 2017). The powerlab system recorded ECG signals with a sampling rate of 4000 Hz and applied an online digital filter at 50 Hz to eliminate noise from electronic disturbance.…”