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.
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
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orcid.org/0000-0003-4159-5111
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