{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T11:55:42Z","timestamp":1777982142573,"version":"3.51.4"},"reference-count":33,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:p>Hernando, D, Garatachea, N, Almeida, R, Casaj\u00fas, JA, and Bail\u00f3n, R. Validation of heart rate monitor Polar RS800 for heart rate variability analysis during exercise. <jats:italic toggle=\"yes\">J Strength Cond Res<\/jats:italic> 32(3): 716\u2013725, 2018\u2014Heart 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\u2013frequency 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 (\u03c1 &gt; 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 O<jats:sub>2<\/jats:sub> above 60%).<\/jats:p>","DOI":"10.1519\/jsc.0000000000001662","type":"journal-article","created":{"date-parts":[[2016,10,4]],"date-time":"2016-10-04T11:04:01Z","timestamp":1475579041000},"page":"716-725","source":"Crossref","is-referenced-by-count":100,"title":["Validation of Heart Rate Monitor Polar RS800 for Heart Rate Variability Analysis During Exercise"],"prefix":"10.1519","volume":"32","author":[{"given":"David","family":"Hernando","sequence":"first","affiliation":[{"name":"Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Arag\u00f3n, University of Zaragoza, Spain;"},{"name":"Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain;"}]},{"given":"Nuria","family":"Garatachea","sequence":"additional","affiliation":[{"name":"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;"},{"name":"Aragon Institute for Health Research (IIS Arag\u00f3n);"},{"name":"Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBERObn); and"}]},{"given":"Rute","family":"Almeida","sequence":"additional","affiliation":[{"name":"Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Arag\u00f3n, University of Zaragoza, Spain;"},{"name":"Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain;"},{"name":"Mathematics Department, Sciences Faculty, University of Porto, (FCUP), Mathematics Center, University of Porto (CMUP), Porto, Portugal"}]},{"given":"Jose A.","family":"Casaj\u00fas","sequence":"additional","affiliation":[{"name":"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;"},{"name":"Aragon Institute for Health Research (IIS Arag\u00f3n);"},{"name":"Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBERObn); and"}]},{"given":"Raquel","family":"Bail\u00f3n","sequence":"additional","affiliation":[{"name":"Biomedical Signal Interpretation & Computational Simulation (BSICoS) Group, Aragon Institute of Engineering Research (I3A), IIS Arag\u00f3n, University of Zaragoza, Spain;"},{"name":"Bioengineering, Biomaterials and Nanomedicine Networking Biomedical Research Center (CIBER-BBN), Zaragoza, Spain;"}]}],"member":"276","reference":[{"key":"R2-20230819","doi-asserted-by":"crossref","first-page":"889","DOI":"10.2165\/00007256-200333120-00003","article-title":"Heart rate variability in athletes","volume":"33","author":"Aubert","year":"2003","journal-title":"Sports Med"},{"key":"R3-20230819","first-page":"6674","article-title":"Analysis of heart rate variability using time-varying frequency bands based on respiratory frequency","author":"Bail\u00f3n","year":"2007","journal-title":"Conf Proc IEEE Eng Med Biol Soc"},{"key":"R4-20230819","doi-asserted-by":"crossref","first-page":"1796","DOI":"10.1109\/TBME.2013.2242328","article-title":"Influence of running stride frequency in heart rate variability analysis during treadmill exercise testing","volume":"60","author":"Bail\u00f3n","year":"2013","journal-title":"IEEE Trans Biomed Eng"},{"key":"R5-20230819","doi-asserted-by":"crossref","first-page":"642","DOI":"10.1109\/TBME.2010.2095011","article-title":"The integral pulse frequency modulation with time-varying threshold: Application to heart rate variability analysis during exercise stress testing","volume":"58","author":"Bail\u00f3n","year":"2011","journal-title":"IEEE Trans Biomed Eng"},{"key":"R6-20230819","doi-asserted-by":"crossref","first-page":"445","DOI":"10.1016\/j.jelectrocard.2011.02.001","article-title":"Influence of time-varying mean heart rate in coronary artery disease diagnostic performance of heart rate variability indices from exercise stress testing","volume":"44","author":"Bail\u00f3n","year":"2011","journal-title":"J Electrocardiol"},{"key":"R7-20230819","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1016\/S0140-6736(86)90837-8","article-title":"Statistical methods for assessing agreement between two methods of clinical measurement","volume":"8","author":"Bland","year":"1986","journal-title":"Lancet"},{"key":"R8-20230819","doi-asserted-by":"crossref","first-page":"633","DOI":"10.2165\/00007256-200838080-00002","article-title":"Autonomic control of heart rate during and after exercise: Measurements and implications for monitoring training status","volume":"38","author":"Borresen","year":"2008","journal-title":"Sports Med"},{"key":"R9-20230819","doi-asserted-by":"crossref","first-page":"555","DOI":"10.1016\/j.annepidem.2010.02.011","article-title":"Assessment of disagreement: A new information-based approach","volume":"20","author":"Costa-Santos","year":"2010","journal-title":"Ann Epidemiol"},{"key":"R10-20230819","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1136\/bjsports-2012-092068","article-title":"Normal electrocardiographic findings: Recognising physiological adaptations in athletes","volume":"47","author":"Drezner","year":"2013","journal-title":"Br J Sports Med"},{"key":"R12-20230819","doi-asserted-by":"crossref","first-page":"134","DOI":"10.1055\/s-2007-964995","article-title":"Validity of the polar S810 to measure R-R intervals in children","volume":"29","author":"Gamelin","year":"2008","journal-title":"Int J Sports Med"},{"key":"R13-20230819","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1007\/s00421-015-3303-9","article-title":"NeilW. Validity of the polar V800 heart rate monitor to measure RR intervals at rest","volume":"116","author":"Giles","year":"2016","journal-title":"Eur J Appl Physiol"},{"key":"R14-20230819","first-page":"737","article-title":"QRS detection optimization in stress test recordings using evolutionary algorithms","author":"Hernando","year":"2014","journal-title":"XLI Int Conf Comput Cardiol"},{"key":"R15-20230819","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1007\/s00059-006-2855-1","article-title":"Heart rate variability and physical exercise. Current status","volume":"31","author":"Hottenrott","year":"2006","journal-title":"Herz"},{"key":"R16-20230819","doi-asserted-by":"crossref","first-page":"371","DOI":"10.1080\/10508410701527860","article-title":"Workload state classification with automation during simulated air traffic control","volume":"17","author":"Kaber","year":"2007","journal-title":"Int J Aviat Psychol"},{"key":"R17-20230819","doi-asserted-by":"crossref","first-page":"791","DOI":"10.1109\/TFUZZ.2006.889825","article-title":"Fuzzy evaluation of heart rate signals for mental stress assessment","volume":"15","author":"Kumar","year":"2007","journal-title":"IEEE Trans Fuzzy Syst"},{"key":"R18-20230819","doi-asserted-by":"crossref","first-page":"255","DOI":"10.2307\/2532051","article-title":"A concordance correlation coefficient to evaluate reproducibility","volume":"45","author":"Lin","year":"1989","journal-title":"Biometrics"},{"key":"R19-20230819","first-page":"357","article-title":"QRS detectors performance comparison in public databases","author":"Llamedo","year":"2014","journal-title":"XLI Int Conf Comput Cardiol"},{"key":"R20-20230819","first-page":"255","article-title":"On the quantification of heart rate variability spectral parameters using time\u2013frequency and time-varying methods","volume":"367","author":"Mainardi","year":"2009","journal-title":"Philos Trans A Math Phys Eng Sci"},{"key":"R21-20230819","doi-asserted-by":"crossref","first-page":"1461","DOI":"10.1109\/TASSP.1985.1164760","article-title":"Wigner-Ville spectral analysis of nonstationary processes","volume":"33","author":"Martin","year":"1985","journal-title":"IEEE Trans Acoust Speech Signal Process"},{"key":"R22-20230819","doi-asserted-by":"crossref","first-page":"541","DOI":"10.1007\/s00421-008-0804-9","article-title":"Effect of low-dose endurance training on heart rate variability at rest and during an incremental maximal exercise test","volume":"104","author":"Martinm\u00e4ki","year":"2008","journal-title":"Eur J Appl Physiol"},{"key":"R23-20230819","doi-asserted-by":"crossref","first-page":"570","DOI":"10.1109\/TBME.2003.821031","article-title":"A wavelet-based ECG delineator: Evaluation on standard databases","volume":"51","author":"Mart\u00ednez","year":"2004","journal-title":"IEEE Trans Biomed Eng"},{"key":"R24-20230819","doi-asserted-by":"crossref","first-page":"334","DOI":"10.1109\/TBME.2003.808831","article-title":"Analysis of heart rate variability in the presence of ectopic beats using the heart timing signal","volume":"50","author":"Mateo","year":"2003","journal-title":"IEEE Trans Biomed Eng"},{"key":"R25-20230819","doi-asserted-by":"crossref","DOI":"10.3389\/fphys.2014.00208","article-title":"Effect of heart rate correction on pre- and post-exercise heart rate variability to predict risk of mortality-an experimental study on the FINCAVAS cohort","author":"Pradhapan","year":"2014","journal-title":"Front Physiol"},{"key":"R26-20230819","first-page":"195","article-title":"Evaluation of ECG signals for mental stress assessment using fuzzy technique","volume":"1","author":"Ranganathan","year":"2011","journal-title":"Int J Secur Softw Eng"},{"key":"R27-20230819","article-title":"Comparison of Polar R RS800G3TM heart rate monitor with Polar R S810iTM and electrocardiogram to obtain the series of RR intervals and analysis of heart rate variability at rest","author":"Rezende Barbosa","year":"2014","journal-title":"Clin Physiol Funct Imaging"},{"key":"R28-20230819","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1016\/S0828-282X(10)70395-0","article-title":"Improvements in heart rate variability with exercise therapy","volume":"26","author":"Routledge","year":"2010","journal-title":"Can J Cardiol"},{"key":"R29-20230819","first-page":"207","article-title":"Heart rate impact on the reproducibility of heart rate variability analysis","volume":"19","author":"Sacha","year":"2013","journal-title":"Int J Cardiol"},{"key":"R30-20230819","first-page":"4257","article-title":"Interaction between heart rate and heart rate variability","volume":"168","author":"Sacha","year":"2014","journal-title":"Ann Noninvasive Electrocardiol"},{"key":"R31-20230819","doi-asserted-by":"crossref","first-page":"294","DOI":"10.3389\/fphys.2013.00294","article-title":"Heart rate variability in normal and pathological sleep","volume":"4","author":"Tobaldini","year":"2013","journal-title":"Front Physiol"},{"key":"R32-20230819","doi-asserted-by":"crossref","first-page":"766","DOI":"10.1378\/chest.126.3.766","article-title":"Physiologic responses to incremental and self-paced exercise in COPD: A comparison of three tests","volume":"126","author":"Turner","year":"2004","journal-title":"Chest"},{"key":"R33-20230819","doi-asserted-by":"crossref","first-page":"1153","DOI":"10.1007\/s00421-011-2079-9","article-title":"Possibilities and limitations of the polar rs800 in measuring heart rate variability at rest","volume":"112","author":"Wall\u00e9n","year":"2012","journal-title":"Eur J Appl Physiol"},{"key":"R35-20230819","doi-asserted-by":"crossref","first-page":"779","DOI":"10.1007\/s00421-010-1415-9","article-title":"Comparison of three mobile devices for measuring R-R intervals and heart rate variability: Polar S810i, Suunto t6 and an ambulatory ECG system","volume":"109","author":"Weippert","year":"2010","journal-title":"Eur J Appl Physiol"},{"key":"R36-20230819","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1093\/oxfordjournals.eurheartj.a014868","article-title":"Heart rate variability. Standards of measurement, physiological interpretation, and clinical use","volume":"17","year":"1996","journal-title":"Eur Heart J"}],"container-title":["Journal of Strength and Conditioning Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.lww.com\/00124278-201803000-00016","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,19]],"date-time":"2023-08-19T09:46:20Z","timestamp":1692438380000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/00124278-201803000-00016"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,3]]},"references-count":33,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2018]]}},"URL":"https:\/\/doi.org\/10.1519\/jsc.0000000000001662","relation":{},"ISSN":["1064-8011"],"issn-type":[{"value":"1064-8011","type":"print"}],"subject":[],"published":{"date-parts":[[2018,3]]}}}