Document Detail

Daily blood ketone body concentrations after acute exercise.
MedLine Citation:
PMID:  7404121     Owner:  NLM     Status:  MEDLINE    
Post-exercise ketosis has been shown to occur in untrained subjects after 3--4 hours' walking, 1 1/2 hours' running or faster 20 minutes' cycling. Trained athletes appear to be resistant to post-exercise ketosis. The present study was undertaken to investigate whether post-exercise ketosis was related to the utilization of muscle glycogen during exercise. Fit and unfit subjects exercised on a bicycle ergometer for 15 minutes at their predicted maximal workload, or swam 90 m, with or without breath-holding, at 07h30. Blood lactate and ketone body levels were measured until 17h00. Although our subjects exercised more strenously than subjects in previous studies, neither the fit nor the unfit group developed ketone body levels which differed significantly from control day values after any of the three forms of exercise. Differences in food intake between fit and unfit, and between South African and Scottish subjects might explain these findings.
J H Koeslag
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde     Volume:  57     ISSN:  0256-9574     ISO Abbreviation:  S. Afr. Med. J.     Publication Date:  1980 Jan 
Date Detail:
Created Date:  1980-10-27     Completed Date:  1980-10-27     Revised Date:  2014-09-12    
Medline Journal Info:
Nlm Unique ID:  0404520     Medline TA:  S Afr Med J     Country:  SOUTH AFRICA    
Other Details:
Languages:  eng     Pagination:  125-7     Citation Subset:  IM    
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MeSH Terms
Acidosis / etiology*
Heart Rate
Ketone Bodies / blood*
Ketosis / etiology*
Lactates / blood
Physical Exertion*
Physical Fitness
Time Factors
Reg. No./Substance:
0/Ketone Bodies; 0/Lactates

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

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