Document Detail

A review of the stroke volume response to upright exercise in healthy subjects.
MedLine Citation:
PMID:  15793084     Owner:  NLM     Status:  MEDLINE    
Traditionally, it has been accepted that, during incremental exercise, stroke volume plateaus at 40% of Vo(2)max. However, recent research has documented that stroke volume progressively increases to Vo(2)max in both trained and untrained subjects. The stroke volume response to incremental exercise to Vo(2)max may be influenced by training status, age, and sex. For endurance trained subjects, the proposed mechanisms for the progressive increase in stroke volume to Vo(2)max are enhanced diastolic filling, enhanced contractility, larger blood volume, and decreased cardiac afterload. For untrained subjects, it has been proposed that continued increases in stroke volume may result from a naturally occurring high blood volume. However, additional research is needed to evaluate the importance of blood volume, or other mechanisms, that influence the stroke volume response to exercise in untrained subjects.
C A Vella; R A Robergs
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  British journal of sports medicine     Volume:  39     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-03-28     Completed Date:  2005-06-07     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  190-5     Citation Subset:  IM    
University of New Mexico, MSC 04 2610, 1, Albuquerque 87131, USA.
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MeSH Terms
Aged, 80 and over
Aging / physiology
Exercise / physiology*
Middle Aged
Oxygen Consumption / physiology
Physical Endurance / physiology
Sex Factors
Stroke Volume / physiology*
Erratum In:
Br J Sports Med.2005 Sep;39(9):688

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

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