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dc.contributor.authorDawkins, Tony
dc.contributor.authorShave, Rob
dc.contributor.authorBaggish, Aaron
dc.contributor.authorDrane, Aimee L.
dc.contributor.authorParisi, Erika
dc.contributor.authorRoberts, Michael
dc.contributor.authorRoberts, Justin
dc.date.accessioned2019-08-16T10:54:38Z
dc.date.available2019-08-16T10:54:38Z
dc.date.issued2019-07-31
dc.identifier.citationDawkins, T.G., Shave, R.E., Baggish, A.L., Drane, A.L., Parisi, E.J., Roberts, M.G. and Roberts, J.D. (2019) 'Electrocardiographic changes following six months of long-distance triathlon training in previously recreationally active individuals', European Journal of Sport Science, pp.1-20. 10.1080/17461391.2019.1641556.en_US
dc.identifier.issn1536-7290
dc.identifier.urihttp://hdl.handle.net/10369/10695
dc.descriptionArticle published in European Journal of Sport Science on 31 July 2019, available at: https://doi.org/10.1080/17461391.2019.1641556.en_US
dc.description.abstractBackground: Clinical electrocardiographic (ECG) guidelines for athlete’s heart are based upon cross-sectional data. We aimed to longitudinally evaluate the influence of endurance training on the ECG and compare the prevalence of ECG abnormalities defined by contemporary criteria. Methods: A group of 66 training-naïve individuals completed a six-month training programme with resting ECGs and cardiopulmonary exercise tests performed at baseline, two and six months. Data were analysed using repeated measures analysis of variance and the prevalence of ECG abnormalities compared between proposed criteria. Results: Maximal oxygen consumption increased from 45.4 ± 7.1 to 50.3 ± 7.1 ml·kg−1·min−1 (p < 0.05) pre-to-post training. ECG changes included, bradycardia (60 ± 12 vs. 53 ± 8 beats·min−1; p < 0.05), shorter P wave duration (106 ± 10 vs. 103 ± 11 ms; p < 0.05), reduced QTc (413 ± 27 vs. 405 ± 22 ms; p < 0.05), and increased left ventricular Sokolow-Lyon index (2.45 ± 0.66 vs. 2.62 ± 0.78 mV; p < 0.05). 85% of individuals showed ≥1 ‘training-related’ ECG finding at six months vs. 68% at baseline. Using the 2013 Seattle Criteria, 4 ECGs were ‘abnormal’ at baseline and 3 at month six vs. 2 at baseline and 1 at month six, using the 2017 International Consensus. Prevalence of ‘borderline’ findings did not increase with training (11% at baseline and six months). Conclusion: Six-months endurance training leads to a greater prevalence of ‘training-related’ but not ‘borderline’ or ‘training-unrelated’ ECGs. ‘Borderline findings’ may not necessarily represent training-related cardiac remodelling in novice athletes following a six-month training intervention.en_US
dc.language.isoenen_US
dc.publisherTaylor and Francisen_US
dc.relation.ispartofseriesEuropean Journal of Sport Science;
dc.titleElectrocardiographic changes following six months of long-distance triathlon training in previously recreationally active individualsen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1080/17461391.2019.1641556
dcterms.dateAccepted2019-07-08
rioxxterms.funderCardiff Metropolitan Universityen_US
rioxxterms.identifier.projectCardiff Metropolian (Internal)en_US
rioxxterms.versionAMen_US
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden_US
rioxxterms.licenseref.startdate2019-08-16
rioxxterms.freetoread.startdate2020-07-31
rioxxterms.funder.project37baf166-7129-4cd4-b6a1-507454d1372een_US


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