Document Detail

Influence of central command and ergoreceptors on the splanchnic circulation during isometric exercise.
MedLine Citation:
PMID:  8565979     Owner:  NLM     Status:  MEDLINE    
The splanchnic circulation can make a major contribution to blood flow changes. However, the role of the splanchnic circulation in the reflex adjustments to the blood pressure increased during isometric exercise is not well documented. The central command and the muscle chemoreflex are the two major mechanisms involved in the blood pressure response to isometric exercise. This study aimed to examine the behaviour of the superior mesenteric artery during isometric handgrip (IHG) at 30% maximal voluntary contraction (MVC). The pulsatility index (PI) of the blood velocity waveform of the superior mesenteric artery was taken as the study parameter. A total of ten healthy subjects [mean age, 21.1 (SEM 0.3) years] performed an IHG at 30% MVC for 90 s. At 5 s prior to the end of the exercise, muscle circulation was arrested for 90 s to study the effect of the muscle chemoreflex (post exercise arterial occlusion, PEAO). The IHG at 30% MVC caused a decrease in superior mesenteric artery PI, from 4.84 (SEM 1.57) at control level to 3.90 (SEM 1.07) (P = 0.015). The PI further decreased to 3.17 (SEM 0.70) (P = 0.01) during PEAO. Our results indicated that ergoreceptors may be involved in the superior mesenteric artery vasodilatation during isometric exercise.
D Duprez; D Voet; M De Buyzere; B Drieghe; B Vyncke; S Mareels; M Afschrift; D L Clement
Related Documents :
9562299 - Effects of contraction duration on low-frequency fatigue in voluntary and electrically ...
25144429 - Energy costs & performance of transtibial amputees & non-amputees during walking & runn...
12509499 - The time course and direction of lower limb vascular conductance changes during volunta...
8338169 - Responses of the human esophagus to experimental intraluminal distension.
8960719 - Decreased postexercise facilitation of motor evoked potentials in patients with chronic...
18853179 - Typing keystroke duration changed after submaximal isometric finger exercises.
10745309 - Demasking of subclinical left ventricular dysfunction in anemic children.
8400099 - Transesophageal atrial pacing for intraoperative sinus bradycardia or av junctional rhy...
25143489 - Early versus delayed passive range of motion exercise for arthroscopic rotator cuff rep...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  71     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1995  
Date Detail:
Created Date:  1996-03-01     Completed Date:  1996-03-01     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  459-63     Citation Subset:  IM; S    
Department of Cardiology and Angiology, University Hospital, Gent, Belgium.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Flow Velocity
Blood Pressure / physiology*
Exercise / physiology*
Heart Rate / physiology
Mesenteric Artery, Superior / physiology
Muscle Contraction / physiology
Muscle, Skeletal / physiology*
Pressoreceptors / physiology*
Pulsatile Flow
Splanchnic Circulation / physiology*

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

Previous Document:  In vivo Achilles tendon loading during jumping in humans.
Next Document:  Role of agonist and antagonist muscle strength in performance of rapid movements.