Pulmonary function and maximum exercise responses following acute ozone exposure
We examined changes in pulmonary function during resting exposure to concentrations of ozone at 0.75, 0.50, 0.25, and 0.00 parts/million (ppM), and determined the effect these exposures had on a subsequent maximum exercise test using filtered air. Resting 2-h exposure to 0.75 and 0.50 ppM ozone caused significant decrements in forced vital capacity. However, 0.00 and 0.25 ppM ozone induced no pulmonary decrement. None of the pollutant conditions reduced subsequent maximum exercise performance. The pulmonary function responses after the maximum capacity test returned to pre-ozone values for the 0.50 ppM condition, but were still significantly decreased for the 0.75 ppM condition. It appeared that increased ventilation during ozone exposure plays a significant role only in inducing pulmonary function decrement, but not in facilitating the return of pulmonary function to normal values.
- Research Organization:
- Univ. of California, Santa Barbara
- OSTI ID:
- 7028213
- Journal Information:
- Aviat., Space Environ. Med.; (United States), Vol. 50:9
- Country of Publication:
- United States
- Language:
- English
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