Document Detail


The effect of endurance exercise at moderate altitude on serum lipid peroxidation and antioxidative functions in humans.
MedLine Citation:
PMID:  9189725     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated the effect of training and racing at moderate altitude (MA) on oxidative stress by assessment of serum diene conjugation (DC) and serum antioxidant potential (TRAP). Nine male top level skiers were studied during a national race (20-30 km) at sea level (SL). Thereafter, the athletes trained for 2 weeks at MA, after which they participated in a 20-30 km race at MA. Venous blood samples were taken before and after the race. The DC, indicating early events of lipid peroxidation, did not change during the race at SL (16 850 vs 15 900 delta Absorbance.l-1) or at MA (19 870 vs. 20 630 delta Abs.l-1). At MA serum DC was higher than at SL both before (25%) and after (30%) the race, the postrace difference being statistically significant (P < 0.05). The TRAP increased during the race at MA (from 1387 to 1943 mumol.l-1, P = 0.016), but not at SL (1713 vs 1582 mumol.l-1). These observations would suggest that the level of oxidative stress might be greater during living, training and racing at MA (higher DC levels). Increased TRAP during the race at MA may indicate that the physiological adaptation to extreme acute oxidative stress was altered. The physiological significance of this observation remains to be investigated.
Authors:
T J Vasankari; U M Kujala; H Rusko; S Sarna; M Ahotupa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  75     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1997  
Date Detail:
Created Date:  1997-08-01     Completed Date:  1997-08-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  396-9     Citation Subset:  IM; S    
Affiliation:
Paavo Nurmi Center, Sports Medical Research Unit, Turku, Finland.
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MeSH Terms
Descriptor/Qualifier:
Adult
Altitude*
Anoxia
Antioxidants / metabolism
Humans
Lipid Peroxidation / physiology*
Male
Oxidation-Reduction
Oxidative Stress / physiology*
Physical Endurance / physiology*
Skiing / physiology
Chemical
Reg. No./Substance:
0/Antioxidants

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


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