| Sex influence on myocardial function with exercise in adolescents. | |
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MedLine Citation:
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PMID: 20737616 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: Ventricular systolic functional response to exercise has been reported to be superior in adult men compared to women. This study explored myocardial responses to maximal upright progressive exercise in late pubertal males and females. METHODS: Doppler echocardiographic techniques were utilized to estimate myocardial function response to a bout of progressive cycle exercise. RESULTS: Systolic functional capacity, as indicated by ejection rate (12.5 +/- 2.8 and 13.1 +/- 1.0 [x10(-2)] ml s(-1) cm(-2) for boys and girls, respectively) and peak aortic velocity (208 +/- 45 and 196 +/- 12 cm s(-1), respectively) at maximal exercise, did not differ between the two groups. Similarly, peak values as well as increases in transmitral pressure gradient (mitral E flow velocity), ventricular relaxation (tissue Doppler imaging E'), and left ventricular filling pressure (E/E' ratio) as estimates of diastolic function were similar in males and females. CONCLUSIONS: This study failed to reveal qualitative or quantitative differences between adolescent boys and girls in ventricular systolic or diastolic functional responses to maximal cycle exercise. |
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Authors:
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Thomas Rowland; Viswanath Unnithan; Max Garrard; Denise Roche; Kathryn Holloway; Julie Sandoval; Simon Marwood |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American journal of human biology : the official journal of the Human Biology Council Volume: 22 ISSN: 1520-6300 ISO Abbreviation: Am. J. Hum. Biol. Publication Date: 2010 Sep-Oct |
Date Detail:
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Created Date: 2010-08-25 Completed Date: 2011-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8915029 Medline TA: Am J Hum Biol Country: United States |
Other Details:
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Languages: eng Pagination: 680-2 Citation Subset: IM |
Copyright Information:
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(c) 2010 Wiley-Liss, Inc. |
Affiliation:
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Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts, USA. Thomas.rowland@bhs.org |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adolescent Development Cardiac Output / physiology* Echocardiography, Doppler Exercise / physiology* Female Heart Rate / physiology* Humans Male Puberty Sex Characteristics* Stroke Volume / physiology* Ventricular Function, Left / physiology* |
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