Document Detail


Cardiovascular responses to static extension and flexion of arms and legs.
MedLine Citation:
PMID:  16633826     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study compared cardiovascular responses to static extension and flexion exercises at four upper and lower limb joints. Eight males performed a 2 min static contraction at 30% of maximal voluntary torque followed immediately by 2 min post-exercise muscle ischaemia (PEMI) using each of four joints: the wrist, elbow, ankle, and knee. In the PEMI, an occlusion cuff placed around the proximal portion of the exercising muscle was inflated to 250 mmHg immediately before the cessation of exercise. Mean arterial pressure (MAP), heart rate (HR), calf blood flow, and calf vascular conductance (CVC) in the non-exercised calf were measured. There was a significant interaction for direction of movement (extension vs. flexion) and limb (upper vs. lower) in HR and CVC during both exercise and PEMI; extension in the wrist and elbow evoked a greater increase in HR and a greater decrease in CVC than flexion, whereas flexion in the ankle and knee elicited a greater increase in HR and a greater decrease in CVC than extension. These results suggest that the cardiovascular responses to extension and flexion differ between arms and legs, partly arising from the activation of the muscle metaboreflex.
Authors:
Ken Tokizawa; Masaki Mizuno; Naoyuki Hayashi; Isao Muraoka
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Publication Detail:
Type:  Clinical Trial; Journal Article     Date:  2006-04-22
Journal Detail:
Title:  European journal of applied physiology     Volume:  97     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-06-28     Completed Date:  2006-08-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  249-52     Citation Subset:  IM    
Affiliation:
Graduate School of Human Sciences, Waseda University, Tokorozawa, Saitama, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Ankle / blood supply,  physiology
Arm / blood supply,  physiology*
Blood Pressure / physiology*
Elbow / blood supply,  physiology
Exercise / physiology*
Heart Rate / physiology*
Humans
Ischemia / physiopathology
Knee / blood supply,  physiology
Leg / blood supply,  physiology*
Male
Muscle, Skeletal / blood supply,  physiology
Regional Blood Flow / physiology
Wrist / blood supply,  physiology

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


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