• English
    • Welsh
  • English 
    • English
    • Welsh
  • Login
Search DSpace:
  • Home
  • Research at Cardiff Met
  • Library Services
  • Contact Us
View item 
  • DSpace home
  • Cardiff School of Sport and Health Sciences
  • Sport Research Groups
  • View item
  • DSpace home
  • Cardiff School of Sport and Health Sciences
  • Sport Research Groups
  • View item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Electrocardiographic changes following six months of long-distance triathlon training in previously recreationally active individuals

Thumbnail
View/open
Author's post-print (857.4Kb)
Author
Dawkins, Tony
Shave, Rob
Baggish, Aaron
Drane, Aimee L.
Parisi, Erika
Roberts, Michael
Roberts, Justin
Date
2019-07-31
Acceptance date
2019-07-08
Type
Article
Publisher
Taylor and Francis
ISSN
1536-7290
Metadata
Show full item record
Abstract
Background: 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.
Journal/conference proceeding
European Journal of Sport Science;
Citation
Dawkins, 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.
URI
http://hdl.handle.net/10369/10695
DOI
https://doi.org/10.1080/17461391.2019.1641556
Description
Article published in European Journal of Sport Science on 31 July 2019, available at: https://doi.org/10.1080/17461391.2019.1641556.
Rights
http://www.rioxx.net/licenses/all-rights-reserved
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
Collections
  • Sport Research Groups [1088]

Related items

Showing items related by title, author, subject and abstract.

  • Thumbnail

    Effectiveness of a tailored training programme in behaviour change counselling for community pharmacists: A pilot study 

    Thomas, Trudy; Passfield, Louis; Coulton, Simon; Crone, Diane (Elsevier, 2015-08-07)
    Objective: To undertake a pilot study assessing effectiveness of a tailored training programme in behaviour change counselling (BCC) for community pharmacists on, their competence and confidence in delivering behaviour ...
  • Thumbnail

    A cluster randomised controlled trial comparing the effectiveness and cost-effectiveness of a school-based cognitive behavioural therapy programme (FRIENDS)in the reduction of anxiety and improvement in mood in children aged 9/10 years 

    Stallard, P.; Skryabina, E.; Taylor, G.; Anderson, R.; Ukoumunne, O.; Daniels, H.; Phillips, Rhiannon; Simpson, N. (NIHR Journals Library, 2015-11)
    Background Anxiety in children is common, impairs everyday functioning and increases the risk of severe mental health disorders in adulthood, yet few children with anxiety are identified and referred for treatment. Objective ...
  • Thumbnail

    Exercise-induced improvements in liver fat and endothelial function are not sustained 12 months following cessation of exercise supervision in non-alcoholic fatty liver disease (NAFLD) 

    Pugh, Christopher J. A.; Sprung, Victoria; Jones, Helen; Richardson, Paul; Shojaee-Morade, Faribra; Umpleby, A. Margot; Green, Daniel J.; Cable, N. Timothy; Trennel, Michael I.; Kemp, Graham J.; Cuthbertson, Daniel J. (Nature Publishing Group, 2016-07-21)
    AIMS: Supervised exercise reduces liver fat and improves endothelial function, a surrogate of cardiovascular disease risk, in non-alcoholic fatty liver disease (NAFLD). We hypothesised that after a 16-week supervised ...

Browse

DSpace at Cardiff MetCommunities & CollectionsBy issue dateAuthorsTitlesSubjectsThis collectionBy issue dateAuthorsTitlesSubjects

My Account

Login

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

DSpace software copyright © 2002-2015  DuraSpace
Contact us | Send feedback | Administrator