Lord, R and George, KP and Somauroo, J and Jain, N and Reese, K and Hoffman, MD and Haddad, F and Ashley, E and Jones, H and Oxborough, D (2016) Exploratory insights from the right-sided electrocardiogram following prolonged endurance exercise. European Journal of Sport Science. ISSN 1536-7290
WS 2014 ECG EJSS_Resubmission.pdf - Accepted Version
Restricted to Repository staff only until 30 September 2017.
BACKGROUND: Prolonged strenuous exercise has a profound effect on cardiac function. The right heart may be more susceptible to this imposition; yet, right-sided chest leads have not been utilised in this setting. METHODS: Thirty highly trained athletes at the 2014 Western States 100-mile Endurance Run from Squaw Valley to Auburn, California (body mass 68 ± 12 kg, age 45 ± 10 years, 57 ± 15 miles per week) were recruited for the study. Pre- and post-race, a right-sided 12-lead ECG was obtained and data were extracted for P, R and S waves, J point, ST segment and T wave amplitude. Data were compared using Students T-test and statistical significance set as P < .05. RESULTS: There was a significant increase in P wave amplitude (29%) and QTc interval (4%) pre- to post-race from standard 12-lead ECG. From the right-sided12-lead ECG, a 23% (P = .01) and 38% (P = .03) increase in J point amplitude in V1R and V2R and a 22% (P = .05) increase in ST segment integral in V2R and V3R were evident. T wave inversion was evident in leads V2R-V6R in 50-90% of athletes, respectively. Close examination revealed marked heterogeneity in individual ECGs. CONCLUSIONS: Completion of a 100-mile ultra-marathon resulted in significant changes in the right-sided ECG alongside more marked responses in specific individuals. P wave, ST segment and T wave changes post-race are indicative of acute exercise-induced right heart electrical adaptation.
|Additional Information:||This is an Accepted Manuscript of an article published by Taylor & Francis Group in European Journal of Sport Science on 30/03/16, available online: http://www.tandfonline.com/10.1080/17461391.2016.1165292|
|Uncontrolled Keywords:||1106 Human Movement And Sports Science, 0913 Mechanical Engineering|
|Subjects:||R Medicine > RC Internal medicine > RC1200 Sports Medicine|
|Divisions:||Sport & Exercise Sciences|
|Publisher:||Taylor & Francis|
|Date Deposited:||04 Apr 2016 08:15|
|Last Modified:||04 Apr 2016 08:15|
|DOI or Identification number:||10.1080/17461391.2016.1165292|
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