Document Detail


Exercise training increases arterial compliance in patients with congestive heart failure.
MedLine Citation:
PMID:  11749654     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Systemic arterial compliance (SAC) makes an important contribution to cardiac afterload, and thus is a significant determinant of left ventricular work. Previous studies have suggested that arterial compliance may be reduced in patients with congestive heart failure (CHF), and that SAC is increased after a 4-week exercise training programme in healthy, sedentary individuals. The present study aimed to investigate the effects of an 8-week exercise training programme on arterial mechanical properties, left ventricular performance and quality of life in CHF patients. A total of 21 patients with NYHA class II or III CHF (mean+/-S.D. age 55+/-13 years) were randomly allocated to either an 8-week exercise training group or a "usual lifestyle" control group. SAC, as determined non-invasively using applanation tonometry and Doppler aortic velocimetry, increased from 0.57+/-0.11 to 0.77+/-0.14 arbitrary compliance units (mean+/-S.E.M.; P=0.01) in the exercise group, while no change occurred in the control group. Left ventricular structure and function was assessed by echocardiography, and these parameters were unchanged over the 8-week study period. Exercise training significantly increased exercise capacity, measured by a 6-min walking test (474+/-27 to 547+/-34 m; P=0.008). Quality of life, as assessed using the Minnesota Living with Heart Failure Evaluation, demonstrated a decrease in heart failure symptoms from 46+/-7 to 24+/-5 units (P=0.01) following the exercise training programme. These data show that exercise training improves SAC in patients with CHF. The accompanying improvement in exercise capacity may be due, in part, to an improvement in arterial function.
Authors:
Melinda M Parnell; Diane P Holst; David M Kaye
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical science (London, England : 1979)     Volume:  102     ISSN:  0143-5221     ISO Abbreviation:  Clin. Sci.     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2001-12-25     Completed Date:  2002-02-15     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7905731     Medline TA:  Clin Sci (Lond)     Country:  England    
Other Details:
Languages:  eng     Pagination:  1-7     Citation Subset:  IM    
Affiliation:
Alfred Heart Centre and Alfred Baker Medical Unit, Baker Medical Research Institute, P.O. Box 6492, St Kilda Road Central, Melbourne, Victoria 8008, Australia.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Analysis of Variance
Arteries / physiology*
Biomechanics
Compliance
Exercise Test
Exercise Therapy / methods*
Female
Heart Failure / physiopathology*,  rehabilitation,  ultrasonography
Humans
Laser-Doppler Flowmetry / methods
Male
Manometry
Middle Aged
Quality of Life
Ventricular Function, Left / physiology

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


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