Document Detail

Adipose tissue lipolysis is increased during a repeated bout of aerobic exercise.
MedLine Citation:
PMID:  10749819     Owner:  NLM     Status:  MEDLINE    
The goal of the study was to examine whether lipid mobilization from adipose tissue undergoes changes during repeated bouts of prolonged aerobic exercise. Microdialysis of the subcutaneous adipose tissue was used for the assessment of lipolysis; glycerol concentration was measured in the dialysate leaving the adipose tissue. Seven male subjects performed two repeated bouts of 60-min exercise at 50% of their maximal aerobic power, separated by a 60-min recovery period. The exercise-induced increases in extracellular glycerol concentrations in adipose tissue and in plasma glycerol concentrations were significantly higher during the second exercise bout compared with the first (P < 0.05). The responses of plasma nonesterified fatty acids and plasma epinephrine were higher during the second exercise bout, whereas the response of norepinephrine was unchanged and that of growth hormone lower. Plasma insulin levels were lower during the second exercise bout. The results suggest that adipose tissue lipolysis during aerobic exercise of moderate intensity is enhanced when an exercise bout is preceded by exercise of the same intensity and duration performed 1 h before. This response pattern is associated with an increase in the exercise-induced rise of epinephrine and with lower plasma insulin values during the repeated exercise bout.
V Stich; I de Glisezinski; M Berlan; J Bulow; J Galitzky; I Harant; H Suljkovicova; M Lafontan; D Rivière; F Crampes
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  88     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  2000 Apr 
Date Detail:
Created Date:  2000-05-17     Completed Date:  2000-05-17     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:  1277-83     Citation Subset:  IM    
Department of Sport Medicine, Charles University, 100 00 Prague 10, Czech Republic.
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MeSH Terms
Adipose Tissue / blood supply,  physiology*
Epinephrine / blood
Exercise / physiology*
Fatty Acids, Nonesterified / blood
Glycerol / metabolism
Human Growth Hormone / blood
Insulin / blood
Norepinephrine / blood
Oxygen Consumption
Physical Exertion / physiology*
Time Factors
Reg. No./Substance:
0/Fatty Acids, Nonesterified; 0/Insulin; 12629-01-5/Human Growth Hormone; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; 56-81-5/Glycerol

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