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Cardiac structure and function in young endurance athletes and nonathletes

Shi, Jian Rong and Selig, Steve 2005, Cardiac structure and function in young endurance athletes and nonathletes, Journal of exercise science and fitness, vol. 3, no. 2, pp. 74-80.

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Title Cardiac structure and function in young endurance athletes and nonathletes
Author(s) Shi, Jian Rong
Selig, SteveORCID iD for Selig, Steve orcid.org/0000-0003-4159-5111
Journal name Journal of exercise science and fitness
Volume number 3
Issue number 2
Start page 74
End page 80
Publisher Society of Chinese Scholars on Exercise Physiology and Fitness
Place of publication Hong Kong
Publication date 2005
ISSN 1728-869X
Keyword(s) endurance training
cardiac structure and function
exercise performance
oxygen uptake
male adolescents
Summary The purpose of this study was to examine, in male adolescents, the effects of long-term endurance training on cardiac structure and function, by adopting a cross-sectional comparison with a nonathletic control group. A total of 13 endurance-trained (EX) and seven untrained (CON) male adolescents (mean ± SE, age = 15.3 ± 0.3 and 15.2 ± 0.28 yrs, respectively) underwent echocardiography at rest to determine left ventricular enddiastolic dimension (LVDd), left ventricular end-systolic dimension (LVDs), left ventricular posterior wall thickness (LVPW), stroke volume (SV), and cardiac output (CO). On separate days, incremental exercise tests were conducted on a cycle ergometer to measure peak oxygen uptake (VO2max) and anaerobic power. VO2max was greater in the endurance group (54.4 ± 1.8 mL min–1 kg–1) than in the control group (45.8 ± 1.6 mL min–1 kg–1; p < 0.05). Mean exercise time was longer in EX (12.9 ± 0.7 min) than CON (10.4 ± 0.8 min; p < 0.05). No significant differences were noted between the two groups in resting heart rate, maximal heart rate, LVDd, LVDs, LVPW, SV, SV indexed, CO, and CO indexed, or in the anaerobic strength. These data provide evidence that endurance-trained adolescent males develop superior exercise performance before the cardiac remodeling that is evident in trained adult athletes.
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Language eng
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Society of Chinese Scholars on Exercise Physiology and Fitness
Persistent URL http://hdl.handle.net/10536/DRO/DU:30033443

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.