Key result
Elite HRV app yields near-perfect correlation with the Polar V800 monitor for HRV indices.
Why the study?
The validity of the Elite HRV smartphone application for measuring time domain heart rate variability indices at rest compared to a validated heart rate monitor was assessed.
Does the Elite HRV smartphone application provide valid heart rate variability measurements compared to the Polar V800 monitor in healthy male medical students?
Cross-Sectional (n=20)
Does the Elite HRV smartphone application provide valid heart rate variability measurements compared to the Polar V800 monitor in healthy male medical students?
Effect estimate: ICC >0.999
p-value: p=>0.05
The Elite HRV smartphone application provides reliable time-domain heart rate variability data comparable to the validated Polar V800 monitor.
Elite HRV app shows agreement with Polar V800 in healthy volunteers; leaves open clinical utility pending larger, diverse validation.
BACKGROUND: With technological advancement, it has become very easy to obtain heart rate variability data with handy heart rate monitors as well as smartphone applications. This study was conducted to assess the validity of Elite HRV smartphone application to measure time domain heart rate variability indices at rest, in comparison to Polar V-800 heart rate monitor. METHODS: Heart rate variability data were acquired from twenty apparently healthy male medical students in supine position after simultaneously connecting Polar V800 and Elite HRV to chest-worn Polar H7 sensor. Time domain indices viz. Mean RR intervals, mean heart rate, standard deviation of normal to normal intervals and root mean square of successive differences of interval were taken for comparison. Difference, validity and agreement were assessed using students t-test, intraclass correlation coefficient and Bland Altman plot and limits of agreement. RESULTS: Students t-test showed that there was no significant difference between the data obtained from Elite HRV and Polar V-800 in all the parameters viz. mean RR intervals, mean heart rate, standard deviation of normal to normal intervals and root mean square of successive differences of interval (p>0.05). Correlation was excellent as shown by Intra-class correlation coefficient of >0.999 in all the parameters. Bland Altman analysis revealed small bias and narrow limits of agreement with all the parameters: mean heart rate [-0.003 (0.05 - 0.04)], mean RR [0.01 (-0.58 - 0.60)], standard deviation of normal to normal intervals [-0.01 (-0.32 - 0.30)] and root mean square of successive differences of interval [-0.05 (-0.89 - 0.79)]. CONCLUSIONS: Elite HRV smartphone application provided reliable time-domain heart rate variability data consistent with the data obtained from validity tested Polar V800 heart rate monitor.
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Chhetri et al. (2022) conducted a cross-sectional in Healthy (n=20). Elite HRV smartphone application vs. Polar V800 heart rate monitor was evaluated on Time domain heart rate variability indices (mean RR intervals, mean heart rate, SDNN, RMSSD) (ICC >0.999, p=>0.05). The Elite HRV smartphone application provided reliable time-domain heart rate variability data with excellent correlation (ICC >0.999) compared to the Polar V800 heart rate monitor.
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