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Validity of the Polar V800 monitor for measuring heart rate variability in mountain running route conditions
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PURPOSE: This study was conducted to test, in mountain running route conditions, the accuracy of the Polar V800 monitor as a suitable device for monitoring the heart rate variability (HRV) of runners. METHOD: Eighteen healthy subjects ran a route that included a range of running slopes such as those encountered in trail and ultra-trail races. The comparative study of a V800 and a Holter SEER 12 ECG Recorder included the analysis of RR time series and short-term HRV analysis. A correction algorithm was designed to obtain the corrected Polar RR intervals. Six 5-min segments related to different running slopes were considered for each subject. RESULTS: The correlation between corrected V800 RR intervals and Holter RR intervals was very high (r = 0.99, p < 0.001), and the bias was less than 1 ms. The limits of agreement (LoA) obtained for SDNN and RMSSD were (- 0.25 to 0.32 ms) and (- 0.90 to 1.08 ms), respectively. The effect size (ES) obtained in the time domain HRV parameters was considered small (ES < 0.2). Frequency domain HRV parameters did not differ (p > 0.05) and were well correlated (r ≥ 0.96, p < 0.001). CONCLUSION: Narrow limits of agreement, high correlations and small effect size suggest that the Polar V800 is a valid tool for the analysis of heart rate variability in athletes while running high endurance events such as marathon, trail, and ultra-trail races. KEYWORDS: HRV; Open field running conditions; Polar V800 heart rate monitor; Validation
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CAMINAL MAGRANS, Pere, et al. Validity of the Polar V800 monitor for measuring heart rate variability in mountain running route conditions. European Journal of Applied Physiology. 2018. Vol. 118, num. 3, pags. 669-677. ISSN 1439-6319. [consulted: 4 of October of 2026]. Available at: https://hdl.handle.net/2445/121933