| Hemorheological alterations related to training and overtraining. | |
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MedLine Citation:
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PMID: 20683154 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Alterations of blood rheology related to muscular activity have been extensively studied over the last 20 years. It has been shown that exercise exerts a "triphasic" action on the rheological properties of blood. In the short term, exercise induces a transient hyperviscosity, mostly due to a rise in hematocrit and plasma viscosity, but also to alterations in erythrocyte rheology. Reversal of this hyperviscosity pattern over the following 24 h can be described as an "autohemodilution". Later, training results in several profiles of "hemorheologic fitness" with a low hematocrit reflecting an expansion in plasma volume, and improvements in red cell rheology (increased deformability, decreased aggregation, reduced disaggregation shear rate). Some specific aspects of these long-term adaptations have been described, such as the intriguing occurrence of a paradoxical improvement in RBC deformability during exercise in some athletes, and overtraining, which is associated with higher plasma viscosity. Given the variety of modes of exercise and the wide heterogeneity of their effects on blood rheology in the short and long term, many investigations remain to be performed in this area of clinical hemorheology. |
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Authors:
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Jean-Frédéric Brun; Emmanuelle Varlet-Marie; Philippe Connes; Ikram Aloulou |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Biorheology Volume: 47 ISSN: 1878-5034 ISO Abbreviation: Biorheology Publication Date: 2010 |
Date Detail:
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Created Date: 2010-08-04 Completed Date: 2010-11-08 Revised Date: 2010-12-02 |
Medline Journal Info:
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Nlm Unique ID: 0372526 Medline TA: Biorheology Country: Netherlands |
Other Details:
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Languages: eng Pagination: 95-115 Citation Subset: IM |
Affiliation:
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Service Central de Physiologie Clinique, Unité d'Exploration Métabolique, CHU Lapeyronie, Montpellier, France. jean-frederic.brun@laposte.net |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Viscosity Erythrocyte Deformability / physiology Exercise* Hemorheology* Humans Oxidative Stress |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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