Lord, R, George, KP, Somauroo, J, Stembridge, M, Jain, N, Hoffman, MD, Shave, R, Haddad, F, Ashley, E, Jones, H and Oxborough, D (2016) Alterations in Cardiac Mechanics Following Ultra-Endurance Exercise: Insights from Left and Right Ventricular Area-Deformation Loops. Journal of the American Society Echocardiography. ISSN 0894-7317

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Abstract

BACKGROUND: The aim of this study was to use novel area-deformation (ε) loops to interrogate the interaction between the right ventricular (RV) and left ventricular (LV) mechanics following a 100-mile endurance run. METHODS: Fifteen participants (mean body mass, 70.1 ± 8.8 kg; mean age, 40 ± 8 years) were recruited for the study. Echocardiography was performed before the race, after the race, and 6 hours into recovery. RV and LV area and longitudinal ε were assessed using standard and speckle-tracking echocardiography. Following cubic spline interpolation, these variables were obtained across the same cardiac cycle and used to derive area-ε loops. RESULTS: The RV area-ε loop demonstrated a rightward shift after the race, with increased RV area (from 26.0 to 27.1 cm(2)) and reduced peak RV ε (from -28.6% to -25.8%). The recovery RV area-ε loop was similar to the postrace loop. A leftward shift was observed in the LV area-ε loop after the race, secondary to reduced LV area (from 35.8 to 32.5 cm(2)) and reduced peak ε (from -18.3% to -16.6%). In recovery, LV ε values returned toward baseline. CONCLUSIONS: A 100-mile ultramarathon resulted in a rightward shift in the RV area-ε loop as a result of RV dilatation. There was a concomitant leftward shift in the LV area-ε loop as a result of underfilling of the left ventricle. At 6 hours after exercise, there was a partial recovery of the left ventricle, while RV function remained depressed. It appears that changes in RV function do not have a serial impact on the left ventricle during recovery from ultra-endurance activity.

Item Type:	Article
Uncontrolled Keywords:	1102 Cardiovascular Medicine And Haematology
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions:	Sport & Exercise Sciences
Publisher:	Elsevier
Related URLs:	Author
Date Deposited:	13 Jul 2016 07:48
Last Modified:	04 Sep 2021 12:43
DOI or ID number:	10.1016/j.echo.2016.05.004
URI:	https://researchonline.ljmu.ac.uk/id/eprint/3867

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