Scaling cardiac dimensions to body size is crucial in the cardiovascular care of elite athletes
AxelPressler, ,
November 23, 2015
As part of their systematic review and meta-analysis, the authors
emphasize the impact of body surface area on athletes heart (1). They
underline the critical importance of reporting anthropometrics and/or
appropriately scaled data in future studies, but conclude that this
approach to analysis is unfortunately rare. We like to refer the
interested reader to our recent comprehensive analysis of the influence of
various ratiometrically and allometrically scaled body size variables such
as body surface area, fat-free mass and height on left ventricular
dimensions in athletes (2). This study provides gender-specific
echocardiographic data of 1051 healthy adult elite athletes with a mean
training history of 10 years separated by low-, moderate- and high-dynamic
disciplines, the latter of which is also compared to an age-matched
sedentary control group. Appropriate allometric scaling of left
ventricular dimensions eliminated some of the absolute between-group
differences in cardiac dimensions, but in male high-dynamic athletes
cardiac size exceeded a sole influence of body size. The strongest
association between a body size variable and left ventricular dimensions
was found for fat-free mass. We therefore agree with the authors that
cardiac dimensions in elite athletes are substantially influenced by body
size. Appropriate scaling should be a routine part of the cardiovascular
care of elite athletes as it sheds more light on the "gray area" between
physiologic cardiac adaptations to exercise and cardiomyopathy.
References
1. Utomi V, Oxborough D, Whyte GP, et al. Heart Published Online
First: March 9, 2013 doi:10.1136/heartjnl-2012-303465
2. Pressler A, Haller B, Scherr J, et al. Association of body
composition and left ventricular dimensions in elite athletes. Eur J Prev
Cardiol 2012;19:1194-204
As part of their systematic review and meta-analysis, the authors emphasize the impact of body surface area on athletes heart (1). They underline the critical importance of reporting anthropometrics and/or appropriately scaled data in future studies, but conclude that this approach to analysis is unfortunately rare. We like to refer the interested reader to our recent comprehensive analysis of the influence of various ratiometrically and allometrically scaled body size variables such as body surface area, fat-free mass and height on left ventricular dimensions in athletes (2). This study provides gender-specific echocardiographic data of 1051 healthy adult elite athletes with a mean training history of 10 years separated by low-, moderate- and high-dynamic disciplines, the latter of which is also compared to an age-matched sedentary control group. Appropriate allometric scaling of left ventricular dimensions eliminated some of the absolute between-group differences in cardiac dimensions, but in male high-dynamic athletes cardiac size exceeded a sole influence of body size. The strongest association between a body size variable and left ventricular dimensions was found for fat-free mass. We therefore agree with the authors that cardiac dimensions in elite athletes are substantially influenced by body size. Appropriate scaling should be a routine part of the cardiovascular care of elite athletes as it sheds more light on the "gray area" between physiologic cardiac adaptations to exercise and cardiomyopathy.
References
1. Utomi V, Oxborough D, Whyte GP, et al. Heart Published Online First: March 9, 2013 doi:10.1136/heartjnl-2012-303465
2. Pressler A, Haller B, Scherr J, et al. Association of body composition and left ventricular dimensions in elite athletes. Eur J Prev Cardiol 2012;19:1194-204
Conflict of Interest:
None declared