Document Detail


Change in left atrial and ventricular dimensions during and immediately after exercise.
MedLine Citation:
PMID:  11039643     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: The aim of this study was to evaluate differences in the left atrial (LAD), total ventricular end-diastolic (TEDD), end-systolic diameters (TESD), and left ventricular shortening fraction (SF) compared with heart rate (HR) and systolic blood pressure (SBP) during exercise and recovery. METHODS: Healthy young male (N = 15) and female (N = 16) subjects performed an incremental cycle ergometer test in upright position, and three phases of energy supply were defined by means of blood lactate concentration (LA) and respiratory gas exchange variables (I: aerobic; II: aerobic-anaerobic transition; III: anaerobic). Subjects were required to rest their arms on a steering bar and to lean their upper body forward; two dimensional (2-D) echocardiograms were obtained over the left parasternal area at rest (R), at the end of each phase, immediately within 15 s post, and 6 min after exercise (6 min). By using VINGMED's "Anatomical M-Mode," it was possible to extract M-Mode Sweeps from stored 2-D-Loops and perform the M-Mode measurement. RESULTS: In contrast to the significant decrease in TEDD and TESD from III to 15 s up to resting values and the significant increase in SF from III to 15 s, the moderate decrease in HR immediately post exercise (15 s) was not significant. The SBP showed a significantly decrease from III to 15 s; in contrast to TEDD, TESD, and SF, the values at 15 s were comparable with the values at II. For LAD, significant increase during exercise and a decrease during recovery were observed. Sex-specific differences of changes in measured variables could not be found. CONCLUSION: We concluded that post exercise measurement of left ventricular and atrial dimensions or SF were not valid to describe heart function at maximal exercise although immediately post exercise HR was near maximal level.
Authors:
R Pokan; S P von Duvillard; P Hofmann; G Smekal; F M Fruhwald; R Gasser; H Tschan; R Baron; P Schmid; N Bachl
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  32     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2001-01-17     Completed Date:  2001-02-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1713-8     Citation Subset:  IM; S    
Affiliation:
Department of Sport Physiology University of Vienna, Institute of Sports Sciences, Austria.
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MeSH Terms
Descriptor/Qualifier:
Adult
Atrial Function
Blood Pressure
Cardiac Volume*
Diastole
Echocardiography
Exercise*
Exercise Test
Female
Heart Atria / anatomy & histology*,  metabolism,  ultrasonography
Heart Rate
Heart Ventricles / anatomy & histology*,  metabolism,  ultrasonography
Humans
Male
Sex Factors
Systole
Ventricular Function

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


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