Kaur, Kulroop
September 2013
Brazilian Journal of Biomotricity;2013, Vol. 7 Issue 3, p139
Academic Journal
The aim of this study was to determine the consequences of atrial remodelling and clinical significance of left atrial size in context of athlete’s heart and its proclivity to produce supra-ventricular tachyarrhythmia. We assessed left atrial dimension in 60 subjects; divided equally in two groups, wrestlers (n=30) and sedentary group (n=30). All subjects were male and free of any structural cardiovascular disease. The left atrial dimension was 2.8 to 3.9 cm (mean, 3.3± 0.28) in wrestlers group and 2.1 to 3.0 (mean, 2.8± 0.5) in the control group. No wrestler had documented symptomatic episodes of paroxysmal atrial fibrillation or supra-ventricular tachyarrhythmia. Stepwise regression analysis showed left atrial enlargement in wrestlers was largely explained by enlarged left ventricular cavity dimensions (R2 = 0.52). In the wrestlers group, the enlarged left atrial and ventricular dimension was found as compared to sedentary counterparts. Atrial fibrillation and supraventricular tachyarrhythmias were not reported. Thus signifying that left atrial remodelling in wrestlers to be regarded as a physiological adaptation to the chronic strength training protocol, without adverse clinical consequences and not pathological.


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