The right ventricle following ultra-endurance exercise: insights from novel echocardiography and 12-lead electrocardiography
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Purpose = There is contradictory evidence related to the impact of ultra-marathon running on right ventricular (RV) structure and function. Consequently, the aims of this study were to: (1) comprehensively assess RV structure and function before and immediately following a 100-mile ultra-marathon in highly trained runners, (2) determine the nature of RV recovery 6 h post-race, and (3) document 12-lead electrocardiogram (ECG) changes post-exercise. Methods = Echocardiography and 12-lead ECG were assessed in 15 competitors in a repeated measures design before and immediately after completion of the 2013 Western States Endurance Race. A subset of nine was reassessed 6 h into recovery. Standard echocardiography was used to determine RV size, function and wall stress. Myocardial speckle tracking (MST) provided peak, time to peak and temporal indices for RV longitudinal strain and strain rates (ε and SR). Results = RV size was increased post-race (inflow tract 14 %, outflow tract 11 %, P = 0.004 and 0.002). RV wall stress was elevated by 11 % post-race. Peak RV ε was reduced by 10 % (P = 0.007) and significantly delayed post-race (P = 0.008). Most changes in RV function persisted at the 6-h assessment. Post-race there was an increase in the prevalence of right-sided ECG changes. Conclusions = Completion of a 100-mile ultra-marathon resulted in acute changes in RV structure and function that persisted 6 h into recovery and are consistent with sustained exposure to an elevated RV wall stress. These findings were supported by right-sided changes to the 12-lead ECG.
European Journal of Applied Physiology;
Lord, R., Somauroo, J., Stembridge, M., Jain, N., Hoffman, M.D., George, K., Jones, H., Shave, R., Haddad, F., Ashley, E. and Oxborough, D. (2015) 'The right ventricle following ultra-endurance exercise: insights from novel echocardiography and 12-lead electrocardiography', European Journal of Applied Physiology, 115(1), pp.71-80
Dynodwr Gwrthrych Digidol (DOI)https://doi.org/10.1007/s00421-014-2995-6
Article published in European Journal of Applied Physiology available at https://doi.org/10.1007/s00421-014-2995-6
- Sport Research Groups 
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Dilatation and dysfunction of the right ventricle immediately after ultraendurance exercise: exploratory insights from conventional two-dimensional and speckle tracking echocardiography Oxborough, David; Shave, Rob; Warburton, Darren; Williams, Karen; Oxborough, Adele; Charlesworth, Sarah; Foulds, Heather; Hoffman, Martin D.; Birch, Karen; George, Keith (2011)Background—Running an ultramarathon has been shown to have a transient negative effect upon RV and LV function. Also, recent findings have suggested that ultra-endurance athletes may be more at risk of developing a "RV ...
Scott, Jessica M.; Esch, Ben T.; Shave, Rob; Warburton, Darren; Gaze, David; George, Keith (2009)Purposes: To comprehensively investigate the cardiovascular consequences of a 160-km ultramarathon using traditional echocardiography, speckle tracking imaging, cardiac biomarkers, and heart rate variability (HRV) and to ...
A comparison of Doppler, tissue Doppler imaging, and strain rate imaging in the assessment of postexercise left ventricular function Shave, Rob; George, Keith; Whyte, Greg; Middleton, Natalie; Hart, Emma; Artis, Nigel; Oxborough, David (NRC Research Press, 2009)Left ventricular (LV) function is characterized by contraction in the longitudinal, radial, and circumferential planes. Previous studies of postexercise changes in LV function have assessed global indices of LV function. ...