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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kippelen, Pascale Caillaud, Corinne Robert, Emmanuelle Masmoudi, Kaouthar Préfaut, Christian |
| Copyright Year | 2002 |
| Abstract | Endogenous nitric oxide (NO) is an important mediator of vasodilatation, bronchodilatation and lung inflammation. We hypothesised that the exhaled NO level may be modified in some endurance-trained athletes during and after intense exercise. Nine athletes with exercise-induced hypoxaemia (EIH), 12 athletes without EIH and 10 untrained subjects exercised for 15 min at 90% maximal oxygen consumption (VO2max). Exhaled NO was measured during exercise, and after 1 h and 22 h of recovery. Exhaled NO concentration (C NO) decreased significantly during exercise in all subjects and returned to basal values after 1 h of recovery with no further modification. Exhaled NO output (VNO) rose significantly during exercise, rapidly dropped down following exercise and was similar to resting values after 1 h and 22 h of recovery. The results also showed that C NO and VNO were significantly lower in the athletes with EIH in comparison with the untrained subjects (VNO was 5.32±0.77 nmol/min versus 3.61±0.72 nmol/min at rest, 18.52±1.50 nmol/min versus 15.00±2.06 nmol/min during heavy exercise, and 5.52±1.04 nmol/min versus 3.79±0.76 nmol/min after 22 h recovery, in untrained subjects and EIH athletes, respectively). These findings do not confirm the hypothesis of pulmonary inflammation associated with EIH. However, potential NO epithelial down-regulation may occur and contribute to the development of gas exchange abnormality in some endurance-trained athletes. |
| Starting Page | 397 |
| Ending Page | 404 |
| Page Count | 8 |
| File Format | |
| ISSN | 00316768 |
| Journal | Pflügers Archiv |
| Volume Number | 444 |
| Issue Number | 3 |
| e-ISSN | 14322013 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2014-04-27 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Human Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Physiology (medical) Clinical Biochemistry |
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