Document Detail


Effects of exercise and training on blood rheology.
MedLine Citation:
PMID:  9858393     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effects of exercise on the rheological properties of blood have not received much research attention. Recent, limited evidence indicates that the viscosities of whole blood and plasma increase in response to a variety of exercise protocols. The increase in whole blood viscosity is mainly attributed to an increase in haematocrit and plasma viscosity, whereas the deformability and aggregability of red blood cells remain unaltered. The increases in plasma viscosity and haematocrit have been ascribed to exercise-induced haemoconcentration as a result of fluid transfer from the blood to the interstitial spaces. Although the long term effects of endurance training on blood rheology have been very briefly examined, the exact effect of training has not as yet been determined. However, available cross-sectional and longitudinal studies indicate that the blood of endurance athletes is more dilute and this has been attributed to an expansion of plasma volume as a result of training. It has been suggested that this blood dilutional effect of endurance training may be advantageous in delivering oxygen to the exercising muscles because of a reduced resistance to blood flow. The increase in plasma volume may also contribute to the body water pool and help offset dehydration. The influence of strength and power training on blood rheology is not known.
Authors:
M S El-Sayed
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Sports medicine (Auckland, N.Z.)     Volume:  26     ISSN:  0112-1642     ISO Abbreviation:  Sports Med     Publication Date:  1998 Nov 
Date Detail:
Created Date:  1999-02-25     Completed Date:  1999-02-25     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8412297     Medline TA:  Sports Med     Country:  NEW ZEALAND    
Other Details:
Languages:  eng     Pagination:  281-92     Citation Subset:  IM    
Affiliation:
Research Institute for Sport and Exercise Sciences, School of Human Sciences, Liverpool John Moores University, England. m.s.elsayed@livjm.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Blood Flow Velocity / physiology
Cross-Sectional Studies
Exercise / physiology*
Female
Humans
Longitudinal Studies
Male
Physical Education and Training
Rheology*
Viscosity

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


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