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Changes of ROS during a Two-day Ultra-marathon Race.
- Source :
-
International Journal of Sports Medicine . Jun2009, Vol. 30 Issue 6, p426-429. 4p. 2 Charts, 2 Graphs. - Publication Year :
- 2009
-
Abstract
- To assess oxidative stress (OS) induced by endurance exercise, concentrations of serum reactive oxygen species (ROS) were determined in 70 Japanese male amateur runners completing a two-day ultra-marathon race. Serum ROS levels were analyzed at three time points: before the race (baseline), after the 1st day race (mid-race), and after the 2nd day race (goal) (post-race). The means (SE) of ROS were 151.4(3.7) (U. CARR.), 168.7(4.4), and 156.8(4.4), respectively. Significant positive trends were noted between age and serum ROS concentrations at the three race points (p<0.05 for all). After adjusting for age, BMI and average monthly running distance, the baseline serum ROS concentrations were positively associated with completion times of the first-day race, in particular (p<0.05), suggesting that the concentrations may predict physical performance. The ROS production increased at mid-race (p<0.05), but the levels returned to baseline levels at post-race, indicating that an antioxidant defense system may develop post-race to reduce OS. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01724622
- Volume :
- 30
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- International Journal of Sports Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 42430249
- Full Text :
- https://doi.org/10.1055/s-0028-1112144