Document Detail


Arterial baroreflex resetting during exercise: a current perspective.
MedLine Citation:
PMID:  16210446     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Within the past 20 years numerous animal and human experiments have provided supportive evidence of arterial baroreflex resetting during exercise. In addition, it has been demonstrated that both the feedforward mechanism of central command and the feedback mechanism associated with skeletal muscle afferents (the exercise pressor reflex) play both independent and interactive roles in the resetting of the arterial baroreflex with exercise. A fundamental alteration associated with baroreflex resetting during exercise is the movement of the operating point of the reflex away from the centring point and closer to the threshold, thereby increasing the ability of the reflex to buffer hypertensive stimuli. Recent studies suggest that central command and the cardiopulmonary baroreceptors may play a role in this movement of the operating point on the baroreflex-heart rate and baroreflex-blood pressure curve, respectively. Current research is focusing on the investigation of central neural mechanisms involved in cardiovascular control, including use of electrophysiological and molecular biological techniques in rat and mouse models to investigate baroreflex resetting as well as use of state of the art brain imaging techniques in humans. However, the purpose of this review is to describe the role of the arterial baroreflex in the regulation of arterial blood pressure during physical activity from a historical perspective with a particular emphasis on human investigations.
Authors:
Peter B Raven; Paul J Fadel; Shigehiko Ogoh
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Review     Date:  2005-10-06
Journal Detail:
Title:  Experimental physiology     Volume:  91     ISSN:  0958-0670     ISO Abbreviation:  Exp. Physiol.     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2005-12-23     Completed Date:  2006-06-08     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  9002940     Medline TA:  Exp Physiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  37-49     Citation Subset:  IM    
Affiliation:
The Department of Integrative Physiology, University of North Texas, Health Science Center, TX 76107, USA. praven@hsc.unt.edu
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MeSH Terms
Descriptor/Qualifier:
Baroreflex / physiology*
Blood Pressure
Carotid Sinus / innervation,  physiology*
Central Nervous System / physiology
Exercise / physiology*
Heart Rate
Humans
Male
Muscle, Skeletal / innervation,  physiology
Neurons, Afferent / physiology
Pressoreceptors / physiology
Solitary Nucleus / physiology
Grant Support
ID/Acronym/Agency:
HL-045547/HL/NHLBI NIH HHS

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


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