Smartphone-Derived Heart-Rate Variability and Training Load in a Women's Soccer Team

International Journal of Sports Physiology and Performance
Andrew A Flatt, Michael R Esco

Abstract

This study evaluated the 7-d mean and coefficient of variation (CV) of supine and standing ultrashort log-transformed root mean square of successive R-R intervals multiplied by 20 (lnRMSSDx20) obtained with a smartphone application (app) in response to varying weekly training load (TL). In addition, the authors aimed to determine if these values could be accurately assessed in as few as 5 or 3 d/wk. Nine women from a college soccer team performed daily heart-rate-variability measures with an app in supine and standing positions over 3 wk of moderate, high, and low TL. The mean and CV over 7, 5, and 3 d were compared within and between weeks. The 5- and 3-d measures within each week provided very good to nearly perfect intraclass correlations (ICCs .74-.99) with typical errors ranging from 0.64 to 5.65 when compared with the 7-d criteria. The 7, 5, and 3-d supine CV and the 7-day standing CV were moderately lower during the low-load than the high-load week (P .003-.045, effect sizes 0.86-0.92), with no significant changes occurring in the other measures. This study supports the use of the mean and CV of lnRMSSD measured across at least 5 d for reflecting weekly values. The supine lnRMSSDx20 CV as measured across 7, 5, and 3 d wa...Continue Reading

Citations

Nov 29, 2016·Journal of Science and Medicine in Sport·Andrew A FlattMichael R Esco
Dec 17, 2015·Clinical Physiology and Functional Imaging·Cesar AbadFábio Nakamura
May 5, 2017·Journal of Human Kinetics·Fabio Y NakamuraIrineu Loturco
Jun 11, 2019·Frontiers in Physiology·Christoph SchneiderAlexander Ferrauti
Sep 7, 2019·Journal of Strength and Conditioning Research·Alejandro JavaloyesManuel Moya-Ramon
Aug 26, 2020·Research Quarterly for Exercise and Sport·Zacharias PapadakisMatthew N Peterson
Jul 16, 2016·British Journal of Sports Medicine·Johann Windt, Tim J Gabbett
Sep 30, 2020·Journal of Athletic Training·Johann WindtDavid T Martin
May 12, 2016·Experimental and Therapeutic Medicine·Jin-Guo Dong
Jul 18, 2020·Scientific Reports·Alejandro Muñoz-López, José Naranjo-Orellana
Apr 17, 2019·Journal of Human Kinetics·Jose MoralesAntón Fíguls
Oct 20, 2020·European Journal of Sport Science·André R MedeirosDaniel Boullosa
Oct 7, 2020·Journal of Strength and Conditioning Research·John DobsonPeter Chrysosferidis
Oct 22, 2020·International Journal of Environmental Research and Public Health·Kelsey DenbyStephen J Ives
Feb 10, 2021·International Journal of Sports Physiology and Performance·Sara R ShermanMichael R Esco
Feb 9, 2021·Journal of Healthcare Informatics Research·N HernandezW Ben Mortenson
Nov 19, 2020·International Journal of Environmental Research and Public Health·Rohan EdmondsStephen J Ives
Jan 2, 2021·International Journal of Environmental Research and Public Health·Tyler D WilliamsPhillip A Bishop
Jun 1, 2016·Journal of Strength and Conditioning Research·Fábio Y NakamuraIrineu Loturco
Jan 27, 2017·Journal of Strength and Conditioning Research·Michael R EscoFábio Y Nakamura
May 27, 2016·Journal of Strength and Conditioning Research·Andrew A FlattFábio Y Nakamura
Mar 2, 2021·International Journal of Sports Physiology and Performance·Roberto A González-FimbresAndrew A Flatt
Feb 4, 2021·Scandinavian Journal of Medicine & Science in Sports·Agustín Manresa-RocamoraManuel Moya-Ramón
Oct 27, 2020·Journal of Strength and Conditioning Research·John DobsonPeter Chrysosferidis
May 1, 2021·International Journal of Environmental Research and Public Health·Silvio A Oliveira-JuniorPaula F Martinez
Aug 1, 2021·Physiology & Behavior·Maryam RabbaniAndrew A Flatt
Aug 17, 2021·Sports Medicine International Open·Petros G BotonisArgyris G Toubekis
Nov 11, 2021·International Journal of Sports Physiology and Performance·Sara R ShermanMichael R Esco

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