Document Detail


Vascular responses in forearm and calf to contralateral static exercises.
MedLine Citation:
PMID:  2708197     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Ten normal subjects performed a 90-s isometric exercise [20, 30, and 40% of maximal voluntary contraction (MVC) of the flexor muscle of the right index finger or quadriceps muscle of the right leg. Contralateral forearm and calf blood flows (strain gauge plethysmography) and arterial blood pressure (auscultation) were measured simultaneously. Each exercise caused a decrease in forearm vascular resistance and a progressive increase in calf resistance. These changes were greatest with the 40% MVC. With finger exercise at 20 and 40% MVC, the percentage decreases in forearm vascular resistance from control were 12.3 and 22.7%, respectively (P less than 0.01). Similar decreases (9.5 and 24.9%, respectively; P less than 0.01) were noted with exercise of the quadriceps muscle. By contrast, the corresponding increases in calf vascular resistance were greater (P less than 0.01) with quadriceps exercise (13.3 and 55.4%, respectively) than with finger exercise (6.0 and 36.0%). Arrest of the circulation to the exercising muscles just before the exercise ended caused an abrupt increase in forearm vascular resistance and a decrease in calf resistance. These studies provide further evidence of the heterogeneity of responses of forearm and calf resistance vessels to certain cardiovascular stimuli.
Authors:
D A Duprez; L K Essandoh; P M Vanhoutte; J T Shepherd
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  66     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1989 Feb 
Date Detail:
Created Date:  1989-06-02     Completed Date:  1989-06-02     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  669-74     Citation Subset:  IM    
Affiliation:
Department of Physiology and Biophysics, Mayo Clinic, Rochester, Minnesota 55905.
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MeSH Terms
Descriptor/Qualifier:
Adult
Afferent Pathways / physiology
Forearm / blood supply
Hemodynamics*
Humans
Isometric Contraction*
Leg / blood supply
Male
Muscle Contraction*
Muscles / innervation
Reflex / physiology
Regional Blood Flow
Vascular Resistance
Vasodilation
Grant Support
ID/Acronym/Agency:
HL-05883/HL/NHLBI NIH HHS

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


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