Document Detail


Mitral annular excursion during exercise in endurance athletes.
MedLine Citation:
PMID:  18171401     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of the present study was to quantify the left ventricular (LV) longitudinal motion during exercise at rest and during upright exercise in 24 healthy male endurance athletes. By using M-mode and two-dimensional echocardiography, the relative mitral annular motion and the absolute LV longitudinal axis was measured at end-diastole and end-systole at rest and during exercise. From rest to peak exercise at a heart rate of 160 beats per minute (bpm) the mitral annular motion increased in the septal and lateral annular borders by 68% and 49% respectively. At rest, mitral annular excursion was significantly (13%) higher in the lateral than in the septal wall but at peak exercise at a heart rate of 160 bpm there was no difference between the septal and lateral annular motion. The total end-diastolic LV axial length did not increase from rest to peak exercise. In conclusion, during upright exercise, mitral annular motion increased significantly with no difference between the septal and lateral annular excursion at peak exercise. The absolute increase in mitral annular motion during exercise was explained by a decrease in axial end-systolic length.
Authors:
Milena Sundstedt; Pär Hedberg; Egil Henriksen
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical physiology and functional imaging     Volume:  28     ISSN:  1475-0961     ISO Abbreviation:  Clin Physiol Funct Imaging     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2008-01-03     Completed Date:  2008-03-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137604     Medline TA:  Clin Physiol Funct Imaging     Country:  England    
Other Details:
Languages:  eng     Pagination:  27-31     Citation Subset:  IM    
Affiliation:
Department of Clinical Physiology and Centre of Clinical Research, Uppsala University, Central Hospital, Västerås, Sweden. milena.sundstedt@ltv.se
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MeSH Terms
Descriptor/Qualifier:
Adult
Diastole
Exercise / physiology*
Heart Rate
Humans
Male
Mitral Valve / physiology*,  ultrasonography
Observer Variation
Physical Endurance / physiology*
Reproducibility of Results
Research Design
Systole
Ventricular Function, Left / physiology*

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


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