Document Detail


Restricted postexercise pulmonary diffusion capacity and central blood volume depletion.
MedLine Citation:
PMID:  9216938     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pulmonary diffusion capacity for carbon monoxide (DLCO), regional electrical impedance (Z0), and the distribution of technetium-99m-labeled erythrocytes together with concentration of plasma atrial natriuretic peptide (ANP) were determined before and after a 6-min "all-out" row in nine oarsmen and in six control subjects. Two and one-half hours after exercise in the upright seated position, DLCO was reduced by 6 (-2 to 21; median and range) %, the thoracic-to-thigh electrical impedance ratio (Z0 thorax/Z0 thigh) rose by 14 (-1 to 29) %, paralleled by a 7 (-3 to 11) % decrease and a 3 (-5 to 12) % increase in the thoracic and thigh blood volume, respectively. These responses were associated with a decrease in the plasma ANP concentration from 15 (13-31) to 12 (9-27) pmol/l (P < 0.05). Similarly, in the supine position, Z0 thorax/Z0 thigh increased by 10 (-5 to 28) % when DLCO was reduced 12 (6-26) % (P < 0.05), whereas DLCO remained stable in the control group. The increase in Z0 thorax/Z0 thigh and the corresponding redistribution of the blood volume in both body positions show that approximately one-half of the postexercise reduction of DLCO is explained by a decrease in the pulmonary blood volume. The role of a reduced postexercise central blood volume is underscored by the lower plasma ANP, which aids in upregulating the blood volume after exercise in athletes.
Authors:
B Hanel; I Teunissen; A Rabol; J Warberg; N H Secher
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  83     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1997 Jul 
Date Detail:
Created Date:  1997-08-01     Completed Date:  1997-08-01     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:  11-7     Citation Subset:  IM    
Affiliation:
Department of Clinical Physiology, Copenhagen Muscle Research Center, Rigshospitalet, DK-2100 Copenhagen, Denmark.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aging / physiology
Atrial Natriuretic Factor / blood
Blood Volume / physiology*
Body Height / physiology
Carbon Monoxide / blood
Electric Impedance
Exercise / physiology*
Hemodynamics / physiology
Hormones / blood
Humans
Male
Pulmonary Diffusing Capacity / physiology*
Regional Blood Flow / physiology
Sodium Pertechnetate Tc 99m / blood
Chemical
Reg. No./Substance:
0/Hormones; 23288-60-0/Sodium Pertechnetate Tc 99m; 630-08-0/Carbon Monoxide; 85637-73-6/Atrial Natriuretic Factor

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


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