Exhaled breath condensate analysis after long distance races
| Autor: | A. J. Guevara, F. J. Berral, Cristóbal Contreras, Oscar F. Araneda, N. Lagos |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male medicine.medical_specialty Physical Exertion Physical Therapy Sports Therapy and Rehabilitation Physical exercise Running chemistry.chemical_compound Young Adult Animal science Malondialdehyde Post exercise medicine Humans Orthopedics and Sports Medicine Exhaled breath condensate Nitrites Long distance runners Prolonged exercise Hydrogen Peroxide Hydrogen-Ion Concentration Surgery Running time Oxidative Stress Breath gas analysis chemistry Breath Tests Female |
| Zdroj: | International journal of sports medicine. 33(12) |
| ISSN: | 1439-3964 |
| Popis: | The impact of an endurance race on pulmonary pro-oxidative formation and lipoperoxidation was evaluated using exhaled breath condensate (EBC). 3 groups of 12, 12 and 17 healthy recreational runners of both sexes ran 10, 21.1 and 42.2 km, respectively. EBC samples were obtained before the run and at 20 and 80 min post run. Concentrations of H 2 O 2 , NO 2 − , malondialdehyde and pH were determined. The 10 km group showed no post-run variations for H 2 O 2 and NO 2 − concentrations. The 21.1 km group showed significant increments for NO 2 − , and H 2 O 2 concentrations in 20 min and 80 min samples. The 42.2 km group, showed increased NO 2 − concentration in 20 min and 80 min samples, while H 2 O 2 concentration increased only in the 20 min sample. In the 10 and 42.2 km groups neither malondialdehyde concentration nor pH showed differences. The 42.2 km group exhibited ΔH 2 O 2 and ΔNO 2 − medians higher than the 10 km group. ΔpH median decreased in 21.1 and 42.2 km groups, exhibiting values significantly lower than the 10 km group. ΔH 2 O 2 y ΔNO 2 − correlated directly with race time, while ΔpH, correlated inversely. In conclusion, intense prolonged exercise favors the increase in pulmonary pro-oxidative levels, with no modifications on lipoperoxidation. Running time relates to the magnitude of acute post exercise pro-oxidative formation. |
| Databáze: | OpenAIRE |
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