Document Detail


Left ventricular end-diastolic geometrical adjustments during exercise in endurance athletes.
MedLine Citation:
PMID:  18076659     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The increase in left ventricular (LV) end-diastolic volume has recently been shown to explain more than 70% of the increase in stroke volume during upright exercise in endurance athletes. As the end-diastolic volume enhancement not could be explained by an increase in axial cavity length an augmentation in LV short-axis diameters is to be expected. To investigate LV end-diastolic geometrical alterations during exercise, 15 endurance athletes were examined using contrast exercise echocardiography. LV end-diastolic short-axis diameters were made from apical views at several LV cavity levels. From upright rest to upright exercise the LV end-diastolic internal cavity measurements increased significantly. During exercise, the LV cavity became geometrically more spherical with the largest increase in the LV end-diastolic short-axis cavity diameters in the mid and apical parts of the left ventricle. The LV internal long axis showed significant increase from rest to exercise but the absolute increase was small.
Authors:
Egil Henriksen; Milena Sundstedt; Pär Hedberg
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Publication Detail:
Type:  Journal Article     Date:  2007-12-11
Journal Detail:
Title:  Clinical physiology and functional imaging     Volume:  28     ISSN:  1475-0961     ISO Abbreviation:  Clin Physiol Funct Imaging     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-02-11     Completed Date:  2008-06-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137604     Medline TA:  Clin Physiol Funct Imaging     Country:  England    
Other Details:
Languages:  eng     Pagination:  76-80     Citation Subset:  IM    
Affiliation:
Department of Clinical Physiology and Centre of Clinical Research, Uppsala University, Central Hospital, Västerås, Sweden. egil.henriksen@ltv.se
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MeSH Terms
Descriptor/Qualifier:
Adult
Cardiac Output / physiology
Diastole / physiology
Echocardiography / methods*
Exercise / physiology*
Exercise Test
Heart Rate / physiology
Humans
Male
Physical Endurance / physiology*
Stroke Volume / physiology
Ventricular Function, Left / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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