title: Validation of Heart Rate Monitor Polar RS800 for Heart Rate Variability Analysis During Exercise.
abstract: Hernando, D, Garatachea, N, Almeida, R, Casajús, JA, and Bailón, R. Validation of heart rate monitor Polar RS800 for heart rate variability analysis during exercise. J Strength Cond Res 32(3): 716-725, 2018-Heart rate variability (HRV) analysis during exercise is an interesting noninvasive tool to measure the cardiovascular response to the stress of exercise. Wearable heart rate monitors are a comfortable option to measure interbeat (RR) intervals while doing physical activities. It is necessary to evaluate the agreement between HRV parameters derived from the RR series recorded by wearable devices and those derived from an electrocardiogram (ECG) during dynamic exercise of low to high intensity. Twenty-three male volunteers performed an exercise stress test on a cycle ergometer. Subjects wore a Polar RS800 device, whereas ECG was also recorded simultaneously to extract the reference RR intervals. A time-frequency spectral analysis was performed to extract the instantaneous mean heart rate (HRM), and the power of low-frequency (PLF) and high-frequency (PHF) components, the latter centered on the respiratory frequency. Analysis was done in intervals of different exercise intensity based on oxygen consumption. Linear correlation, reliability, and agreement were computed in each interval. The agreement between the RR series obtained from the Polar device and from the ECG is high throughout the whole test although the shorter the RR is, the more differences there are. Both methods are interchangeable when analyzing HRV at rest. At high exercise intensity, HRM and PLF still presented a high correlation (ρ > 0.8) and excellent reliability and agreement indices (above 0.9). However, the PHF measurements from the Polar showed reliability and agreement coefficients around 0.5 or lower when the level of the exercise increases (for levels of O2 above 60%).
authors.affiliation: Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Aragón, University of Zaragoza, Spain.|Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Hernando
authors.affiliation: Physiatry and Nursing Department, Health and Sport Sciences Faculty, GENUD (Growth, Exercise, Nutrition and Development) research group. AgriFood Institute of Aragon IA2 (University of Zaragoza-CITA), Zaragoza, Spain.|Aragon Institute for Health Research (IIS Aragón).|Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBERObn).
authors.forename: Nuria
authors.initials: N
authors.lastname: Garatachea
authors.affiliation: Mathematics Department, Sciences Faculty, University of Porto, (FCUP), Mathematics Center, University of Porto (CMUP), Porto, Portugal.|Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Aragón, University of Zaragoza, Spain.|Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain.
authors.forename: Rute
authors.initials: R
authors.lastname: Almeida
authors.affiliation: Physiatry and Nursing Department, Health and Sport Sciences Faculty, GENUD (Growth, Exercise, Nutrition and Development) research group. AgriFood Institute of Aragon IA2 (University of Zaragoza-CITA), Zaragoza, Spain.|Aragon Institute for Health Research (IIS Aragón).|Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBERObn).
authors.forename: Jose A
authors.initials: JA
authors.lastname: Casajús
authors.affiliation: Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Aragón, University of Zaragoza, Spain.|Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain.
authors.forename: Raquel
authors.initials: R
authors.lastname: Bailón
mesh_terms: D000328:Adult; D004562:Electrocardiography; D016552:Ergometry; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000592:standards*; D010101:Oxygen Consumption / Q000502:physiology; D015203:Reproducibility of Results; D056152:Respiratory Rate / Q000502:physiology; D012146:Rest / Q000502:physiology