Effect of lifetime endurance training on left atrial mechanical function and on the risk of atrial fibrillation

Brugger, Nicolas; Krause, René; Carlen, Frederik; Rimensberger, Caroline; Hille, Ron; Steck, Hélène; Wilhelm, Matthias; Seiler, Christian (2014). Effect of lifetime endurance training on left atrial mechanical function and on the risk of atrial fibrillation. International journal of cardiology, 170(3), pp. 419-425. Elsevier 10.1016/j.ijcard.2013.11.032

[img] Text
1-s2.0-S0167527313020500-main.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (425kB) | Request a copy

Background Left atrium (LA) dilation and P-wave duration are linked to the amount of endurance training and are risk factors for atrial fibrillation (AF). The aim of this study was to evaluate the impact of LA anatomical and electrical remodeling on its conduit and pump function measured by two-dimensional speckle tracking echocardiography (STE). Method Amateur male runners > 30 years were recruited. Study participants (n = 95) were stratified in 3 groups according to lifetime training hours: low (< 1500 h, n = 33), intermediate (1500 to 4500 h, n = 32) and high training group (> 4500 h, n = 30). Results No differences were found, between the groups, in terms of age, blood pressure, and diastolic function. LA maximal volume (30 ± 5, 33 ± 5 vs. 37 ± 6 ml/m2, p < 0.001), and conduit volume index (9 ± 3, 11 ± 3 vs. 12 ± 3 ml/m2, p < 0.001) increased significantly from the low to the high training group, unlike the STE parameters: pump strain − 15.0 ± 2.8, − 14.7 ± 2.7 vs. − 14.9 ± 2.6%, p = 0.927; conduit strain 23.3 ± 3.9, 22.1 ± 5.3 vs. 23.7 ± 5.7%, p = 0.455. Independent predictors of LA strain conduit function were age, maximal early diastolic velocity of the mitral annulus, heart rate and peak early diastolic filling velocity. The signal-averaged P-wave (135 ± 11, 139 ± 10 vs. 148 ± 14 ms, p < 0.001) increased from the low to the high training group. Four episodes of non-sustained AF were recorded in one runner of the high training group. Conclusion The LA anatomical and electrical remodeling does not have a negative impact on atrial mechanical function. Hence, a possible link between these risk factors for AF and its actual, rare occurrence in this athlete population, could not be uncovered in the present study.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology

UniBE Contributor:

Brugger, Nicolas Jacques; Steck, Hélène; Wilhelm, Matthias and Seiler, Christian

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0167-5273

Publisher:

Elsevier

Language:

English

Submitter:

Matthias Wilhelm

Date Deposited:

19 Feb 2014 08:39

Last Modified:

02 Nov 2015 10:45

Publisher DOI:

10.1016/j.ijcard.2013.11.032

BORIS DOI:

10.7892/boris.40073

URI:

https://boris.unibe.ch/id/eprint/40073

Actions (login required)

Edit item Edit item
Provide Feedback