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Chronic adaptation of atrial structure and function in elite male athletes

McClean, G and George, KP and Lord, R and Utomi, V and Jones, N and Somauroo, J and Fletcher, S and Oxborough, D (2015) Chronic adaptation of atrial structure and function in elite male athletes. EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING, 16 (4). pp. 417-422. ISSN 2047-2404

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Abstract

Aims The aim of this study was to establish the degree of structural and functional adaptations in the left (LA) and right atria (RA) in elite male athletes engaged in ‘high dynamic : high static’ (HDHS) and ‘low dynamic : high static’ (LDHS) sporting disciplines compared with sedentary controls.
Methods and results Eighteen male, elite HDHS athletes (13 boxers and 7 triathletes), 18 male, elite LDHS athletes (8 weightlifters and 10 Akido), and 20 male, age-matched sedentary controls were assessed using conventional 2D and myocardial speckle tracking (MST) echocardiography. Absolute LA and RA volumes [end systole (VOLes), pre A (VOLpreA), and end diastole (VOLed)] as well as the functional indices of reservoir (RESvol), conduit (CONvol), and booster volumes (BOOvol) were defined. MST allowed the assessment of atrial strain (ε) during the reservoir (RESε), conduit (CONε), and booster (BOOε) phases of the cardiac cycle. Both LA and RA sizes were significantly larger in HDHS compared with LDHS and controls (P < 0.05) across all structural and functional volume parameters with no significant difference between LDHS and controls (LAVOLes 35 ± 8, 26 ± 10, and 23 ± 5 mL/m2; RAVOLes 37 ± 10, 26 ± 9, and 23 ± 5 mL/m2, LARESvol 35 ± 9, 25 ± 11, and 23 ± 7 mL; RARESvol 41 ± 11, 34 ± 11, and 28 ± 7 mL for HDHS, LDHS, and controls, respectively). RA : LA ratios were >1 in all groups due to a comparatively larger RA volume (RAVOLes : LAVOLes 1.05 ± 0.26, 1.12 ± 0.55, and 1.04 ± 0.28 for HDHS, LDHS, and controls, respectively, P > 0.05). There was no significant between group differences for any ε parameter.
Conclusion Bi-atrial hypertrophy is demonstrated in HDHS athletes and not in LDHS athletes, suggesting that the dynamic component to training is the primary driver for both LA and RA adaptation. Although functional data derived from volume shifts suggest augmented function in HDHS athletes, MST imaging demonstrated no difference in intrinsic atrial ε in any of the groups.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING following peer review. The version of record Chronic adaptation of atrial structure and function in elite male athletes Gavin McClean, Keith George, Rachel Lord, Victor Utomi, Nigel Jones, John Somauroo, Sarah Fletcher, David Oxborough European Heart Journal - Cardiovascular Imaging Apr 2015, 16 (4) 417-422; is available online at: http://dx.doi.org/10.1093/ehjci/jeu215
Uncontrolled Keywords: Science & Technology; Life Sciences & Biomedicine; Cardiac & Cardiovascular Systems; Cardiovascular System & Cardiology; Athletes heart; Left atrium; Right atrium; Strain imaging; Echocardiography; SPECKLE TRACKING ECHOCARDIOGRAPHY; RIGHT VENTRICLE; DOPPLER TISSUE; HEART; EXERCISE; VOLUME; DEFORMATION; PREVALENCE; MORPHOLOGY
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: OXFORD UNIV PRESS
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Date Deposited: 15 Mar 2016 14:07
Last Modified: 15 Mar 2016 14:07
DOI or Identification number: 10.1093/ehjci/jeu215
URI: http://researchonline.ljmu.ac.uk/id/eprint/3234

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