Document Detail

Metabolic and hormonal responses to prolonged physical exercise in dogs after a single fat-enriched meal.
MedLine Citation:
PMID:  6394319     Owner:  NLM     Status:  MEDLINE    
Metabolic and hormonal responses to prolonged treadmill exercise in dogs fed a fat-enriched meal 4 h prior to the exercise were compared to those measured 4 h after a mixed meal or in the postabsorptive state. Ingestion of the fat-enriched meal caused significant elevations in the resting values of plasma triglyceride (TG), free fatty acid (FFA), and glycerol concentrations. A reduction of the plasma TG concentration (from 1.6 +/- 0.2 to 1.1 +/- 0.10 mmol X l-1, P less than 0.005) occurred only in dogs exercising after the fat-enriched meal. No significant changes in this variable were noted in dogs fed a mixed meal, whilst in the postabsorptive state exercise caused an increase in the plasma TG level (from 0.42 +/- 0.03 to 0.99 +/- 0.11 mmol X l-1, P less than 0.01). The exercise-induced elevations in plasma FFA and glycerol concentrations were the highest in the dogs given the fat-enriched meal. Plasma glycerol during exercise correlated with the initial values of circulating TG (r = 0.73). The plasma FFA-glycerol ratio, at the end of exercise was lowest in the dogs taking the fat-enriched meal (1.39 +/- 0.19), suggesting an increased utilization of FFA in comparison with that in the postabsorptive state (3.27 +/- 0.37) or after a mixed meal (2.88 +/- 0.55). Basal serum insulin (IRI) concentrations were similarly enhanced in dogs fed fat-enriched and mixed meals, and they were reduced to control values within 60 min of exercise.(ABSTRACT TRUNCATED AT 250 WORDS)
I Falecka-Wieczorek; H Kaciuba-Uściłko
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  53     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1984  
Date Detail:
Created Date:  1985-03-19     Completed Date:  1985-03-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  267-73     Citation Subset:  IM    
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MeSH Terms
Blood Glucose / analysis
Dietary Fats / pharmacology*
Epinephrine / blood
Fatty Acids, Nonesterified / blood
Glycerol / blood
Hormones / physiology*
Insulin / blood
Lactates / blood
Metabolism / drug effects*
Norepinephrine / blood
Physical Exertion*
Time Factors
Triglycerides / blood*
Reg. No./Substance:
0/Blood Glucose; 0/Dietary Fats; 0/Fatty Acids, Nonesterified; 0/Hormones; 0/Lactates; 0/Triglycerides; 11061-68-0/Insulin; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; 56-81-5/Glycerol

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

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