Document Detail


Effect of short-term strenuous exercise on erythrocyte 2,3-diphosphoglycerate in untrained men: a time-course study.
MedLine Citation:
PMID:  7556132     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The literature on the response of erythrocyte 2,3-diphosphoglycerate (2,3-DPG) following exercise is replete with inconsistencies, and recent studies have shown that the time of blood sampling during and following exercise, as well as the duration of exercise, are important in evaluating the response of 2,3-DPG. Experiments were designed to measure the response of 2,3-DPG following short-term strenuous exercise in two groups of untrained men. Twelve men, 19-22 years old (study 1), exercised on a bicycle ergometer at 122.5 W for 10 min and red blood cell (RBC) 2,3-DPG was measured at 0 and 50 min following exercise. The level of 2,3-DPG (mumol.ml-1 RBC) increased after exercise (P < 0.05), but this increase was not significant when 2,3-DPG was expressed as mol.mol-1 hemoglobin (Hb). However, following 50 min of rest, 2,3-DPG (mol.mol-1 Hb) decreased significantly. In a second group (study 2), nine other men, aged 18-19 years, exercised at the same workload for 15 min and 2,3-DPG was measured at 0, 30, 60, 180, and 330 min respectively after exercise, and no significant mean changes in the level of the phosphate were observed. Findings from these studies suggest that 2,3-DPG does not provide a compensatory adjustment to facilitate oxygen delivery in the hypoxia of short-term strenuous exercise in untrained males immediately following exercise and when recovery intervals of up to 330 min are also examined. It is suggested that 2,3-DPG be reported as mol.mol-1 Hb, since the phosphate exists on Hb in an equimolar ratio in normal physiological states.
Authors:
O E Odje; J M Ramsey
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:  1995-11-09     Completed Date:  1995-11-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  53-7     Citation Subset:  IM    
Affiliation:
Department of Biology, University of Dayton, OH 45469, USA.
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MeSH Terms
Descriptor/Qualifier:
2,3-Diphosphoglycerate
Adult
Diphosphoglyceric Acids / blood*
Erythrocytes / metabolism*
Humans
Male
Osmolar Concentration
Physical Education and Training
Physical Exertion*
Rest
Time Factors
Chemical
Reg. No./Substance:
0/Diphosphoglyceric Acids; 138-81-8/2,3-Diphosphoglycerate

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


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