| Athlete's heart in prepubertal male swimmers. | |
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MedLine Citation:
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PMID: 16454879 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To determine the cardiac response to intensive endurance training during prepuberty, we studied 22 male prebubertal swimmers who had been trained for at least 3 years, with a mean of 3.91 years and a standard deviation of 1.10 years, and 8 hours per week, the mean being 10.0 hours and the standard deviation 1.7 hours. The control group consisted of 21 boys of similar age, height and weight (p is more than 0.05 for all), who were not participating regularly in sporting activities. Left ventricular dimensions and systolic function were examined with M-Mode; velocities and durations of transmitral flow were measured with pulsed wave Doppler; and tissue Doppler velocities and durations were measured with pulsed wave tissue Doppler echocardiography. We determined the regional velocities of the lateral mitral annulus in four-chamber position, the left ventricular posterolateral wall, and the midseptum in long-axis position. Interventricular septal thickness, left ventricular posterior wall thickness, left ventricular mass and relative wall thickness were increased in swimmers (p is less than 0.05). All the tissue Doppler measurements were similar in both groups, except the septal isovolumic relaxation time. We observed that the left ventricular wall thickness had increased concentrically in prepubertal swimmers compared to controls, without a significant change in the left ventricular diastolic diameter. This finding is contrary to the previous studies on adult swimmers. Whether the structural changes observed in our study reflect the unique cardiac adaptation of the hearts of children to exercise will only be disclosed by longitudinal studies of prepubertal athletes. |
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Authors:
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Canan Ayabakan; Figen Akalin; Sami Mengütay; Birol Cotuk; Ilhan Odabas; Ali Ozüak |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Cardiology in the young Volume: 16 ISSN: 1047-9511 ISO Abbreviation: Cardiol Young Publication Date: 2006 Feb |
Date Detail:
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Created Date: 2006-02-03 Completed Date: 2006-06-22 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9200019 Medline TA: Cardiol Young Country: England |
Other Details:
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Languages: eng Pagination: 61-6 Citation Subset: IM |
Affiliation:
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Pediatric Cardiology Department, Marmara University, Istanbul, Turkey. cayabakan@yahoo.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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physiology* Child Echocardiography, Doppler, Pulsed Follow-Up Studies Heart Ventricles / ultrasonography Humans Male Myocardial Contraction / physiology Puberty / physiology* Swimming / physiology* Ventricular Function* Ventricular Function, Left / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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