Document Detail


Metabolic responses to bicycle exercise after several days of physical work and energy deficiency.
MedLine Citation:
PMID:  7336123     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The responses of plasma free fatty acids (FFA), free glycerol, beta-hydroxybutyrate (BUT) and glucose to bicycle exercise (corresponding to 50% of the maximal VO2) were investigated in 11 cadets of the Norwegian Military Academy, before a combat course (control experiment) and on the third and fifth day of such a course which involved nearly continuous intense military activities and pronounced energy deficiency. Pre-exercise levels of FFA, glycerol and BUT were greatly elevated on days 3 and 5 as compared with pre-exercise levels before the course. The increases in plasma FFA, glucose and BUT in response to bicycle exercise were much more pronounced on days 3 and 5 than before the course. The increases observed during (and before) the course were approximately in mmol/l: FFA 1.0 (0.3), glycerol 0.3 (0.08), BUT 0.6 (0.0). The day 5 responses were lower than those on day 3. The plasma glucose concentration appeared to decrease slightly after exercise on days 3 and 5. The results demonstrate that several days of strenuous work and pronounced energy deficiency do appreciably increase acute metabolic responses to exercise, and indicate that there is a very high FFA-utilization under such conditions.
Authors:
T O Rognum; O Vaage; A Høstmark; P K Opstad
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Scandinavian journal of clinical and laboratory investigation     Volume:  41     ISSN:  0036-5513     ISO Abbreviation:  Scand. J. Clin. Lab. Invest.     Publication Date:  1981 Oct 
Date Detail:
Created Date:  1982-05-12     Completed Date:  1982-05-12     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0404375     Medline TA:  Scand J Clin Lab Invest     Country:  NORWAY    
Other Details:
Languages:  eng     Pagination:  565-71     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
3-Hydroxybutyric Acid
Adult
Blood Glucose / metabolism
Energy Metabolism*
Fatty Acids, Nonesterified / blood
Glycerol / blood
Hormones / blood
Humans
Hydroxybutyrates / blood
Male
Military Medicine
Physical Exertion*
Time Factors
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Hormones; 0/Hydroxybutyrates; 300-85-6/3-Hydroxybutyric Acid; 56-81-5/Glycerol

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


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