Document Detail

Serum urea and amino nitrogen changes with exercise duration.
MedLine Citation:
PMID:  1001315     Owner:  NLM     Status:  MEDLINE    
In eight groups of healthy male athlets, aged 19-44 years, serum urea, alpha-amino nitrogen and free tyrosine were determined before and after physical exercise of different duration. Exercise was competitional running, skiing, march or bicycle ergometer work, its duration between 15 and 765 min. The results were compared with previous data from this laboratory and those of other authors. After about 60-70 min of exertion, there is a significant fall in serum amino nitrogen and a rise in urea and free tyrosine; the magnitude of these changes correlated well to the duration of exercise. Likewise, there is a significant correlation between increase in serum urea and decrease in amino nitrogen. The observed changes strongly suggest an increased breakdown of nitrogen-containing compounds during prolonged exercise.
G Haralambie; A Berg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  36     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1976 Dec 
Date Detail:
Created Date:  1977-02-16     Completed Date:  1977-02-16     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:  39-48     Citation Subset:  IM    
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MeSH Terms
Amino Acids / blood*
Physical Exertion*
Time Factors
Tyrosine / blood
Urea / blood*
Reg. No./Substance:
0/Amino Acids; 55520-40-6/Tyrosine; 57-13-6/Urea

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