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Int J Sports Med 1986; 07(3): 133-136
DOI: 10.1055/s-2008-1025750
© Georg Thieme Verlag Stuttgart · New York

Enlarged Left Atrial Dimension in Former Endurance Athletes: An Echocardiographic Study

C. Höglund
  • Section of Cardiology, Department of Medicine I, Södersjukhuset, Stockholm, and Department of Clinical Physiology, University of Lund, Malmö General Hospital, Malmö, Sweden
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Publication Date:
14 March 2008 (online)

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Abstract

For the purpose of characterizing the left side of the heart by M-mode echocardiography in former endurance athletes, 13 subjects with a mean age of 66 years, all having competed in elite sports up to the age of 35, were studied. As controls, 21 men, with a mean age of 69 years considered to be sedentary and having no history or signs of heart disease, were examined. The two groups did not differ with regard to heart rate, blood pressure, weight, and height.

The mean left atrial dimension (LAD) in the former athletes was significantly larger than in the sedentary controls: 43±6 mm and 38±3 mm, respectively (P < 0.05). This was also true when LAD was corrected for body surface area (BSA): 22.1 ± 3.3 mm/m2 and 20.0±1.8 mm/m2 (P < 0.05). However, no significant differences were seen between the athletes and sedentary controls in the left ventricular end-diastolic dimension and wall thickness.

In conclusion, this study indicates that former endurance athletes have an enlarged left atrium but a normal-sized left ventricle.

Key words

M-mode echocardiography - left atrial dimension - former endurance athletes