Document Detail

Resting and post exercise arterial-ventricular coupling in endurance-trained men and women.
MedLine Citation:
PMID:  23426069     Owner:  NLM     Status:  Publisher    
The relationship between effective arterial elastance (E(A)) and left ventricular end-systolic elastance (E(LV)) is a determinant of cardiac performance, known as arterial-ventricular coupling (AVC). The purpose of this study was to examine the acute effects of high-intensity interval (HI) and low-intensity steady state (SS) exercise on AVC. Twenty-three (13 men, 10 women) young (26 years), endurance-trained individuals completed a VO(2) peak test followed by an acute SS and HI exercise bout on separate visits. Before (Pre) and 30- and 60-min after each bout, measures of aortic end-systolic pressure (ESP), left ventricular end-systolic volume and stroke volume were obtained. Across both conditions (HI and SS) and both sexes, at 30 and 60 min post exercise, ESP and E(LV) were reduced from Pre 30 and 60-min exercise (ESP: 86±7, 77±8 and 73±8 mm Hg; E(LV): 4.93±1.53, 4.19±1.38 and 4.10±1.53 mm Hg ml(-1) m(-2)). E(A) was only reduced at 60 min post exercise (1.90±0.36, 1.78±0.50 and 1.57±0.36). Both E(A) and E(LV) were reduced following acute SS and HI exercise. This is likely because of similar reductions in total peripheral resistance following both exercise bouts. These results suggest that endurance-trained individuals are able to match peripheral vascular changes with changes in left ventricular function following dynamic exercise of different intensities.Journal of Human Hypertension advance online publication, 21 February 2013; doi:10.1038/jhh.2013.7.
C A Fahs; L M Rossow; H Yan; S M Ranadive; S Agiovlasitis; K R Wilund; T Baynard; B Fernhall
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-21
Journal Detail:
Title:  Journal of human hypertension     Volume:  -     ISSN:  1476-5527     ISO Abbreviation:  J Hum Hypertens     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8811625     Medline TA:  J Hum Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA.
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