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Regular endurance training in adolescents impacts atrial and ventricular size and function
Jönköping University, Sweden.
Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Clinical Physiology in Linköping. Linköping University, Center for Medical Image Science and Visualization (CMIV).
Jonköping University, Sweden.
Jönköping University, Sweden.
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2017 (English)In: European Heart Journal Cardiovascular Imaging, ISSN 2047-2404, E-ISSN 2047-2412, Vol. 18, no 6, 681-687 p.Article in journal (Refereed) Published
Abstract [en]

Aims The aims of the study were to explore the effects of long-term endurance exercise on atrial and ventricular size and function in adolescents and to examine whether these changes are related to maximal oxygen uptake (VO2max). Methods and results Twenty-seven long-term endurance-trained adolescents aged 13-19 years were individually matched by age and gender with 27 controls. All participants, 22 girls and 32 boys, underwent an echocardiographic examination at rest, including standard and colour tissue Doppler investigation. VO2max was assessed during treadmill exercise. All heart dimensions indexed for body size were larger in the physically active group compared with controls: left ventricular end-diastolic volume 60 vs. 50 mL/m(2) (P amp;lt; 0.001), left atrial volume 27 vs. 19 mL/m(2) (P amp;lt; 0.001), and right ventricular (RV) and right atrial area 15 vs. 13 and 9 vs. 7 cm(2)/m(2), respectively (P amp;lt; 0.001 for both). There were strong associations between the size of the cardiac chambers and VO2max. Further, we found improved systolic function in the active group compared with controls: left ventricular ejection fraction 61 vs. 59% (P = 0.036), tricuspid annular plane systolic excursion 12 vs. 10 mm/m(2) (P = 0.008), and RV early peak systolic velocity s 11 vs. 10 cm/s (P = 0.031). Conclusion Cardiac remodelling to long-term endurance exercise in adolescents is manifested by an increase in atrial as well as ventricular dimensions. The physically active group also demonstrated functional remodelling with an increase in TAPSE and systolic RVwall velocity. These findings have practical implications when assessing cardiac enlargement and function in physically active youngsters.

Place, publisher, year, edition, pages
OXFORD UNIV PRESS , 2017. Vol. 18, no 6, 681-687 p.
Keyword [en]
Echocardiography; Heart; Athlete; Atria; Adolescent; Exercise
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:liu:diva-139627DOI: 10.1093/ehjci/jew150ISI: 000405182500014PubMedID: 27406576OAI: oai:DiVA.org:liu-139627DiVA: diva2:1133717
Note

Funding Agencies|Medical Research Council of Southeast Sweden (FORSS) [5544631]

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-08-16

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Engvall, Jan
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Division of Cardiovascular MedicineFaculty of Medicine and Health SciencesDepartment of Clinical Physiology in LinköpingCenter for Medical Image Science and Visualization (CMIV)
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