Effects of breathing sulfur dioxide and an acidic sulfate aerosol during exercise on selected pulmonary function measurements

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5884320

Jones, D L

This study was undertaken to determine the effects of ambient air, acidic sulfate aerosol, sulfur dioxide, and the combination of sulfur dioxide and aerosol on selected pulmonary function measurements after 20 minutes of exercise at 75%-80% maximal heart rate in a hot (36-19/sup 0/C) and humid (70-90% RH) environment. Six male subjects between the ages 26 and 33 years with no pre-existing pulmonary or cardiovascular problems rode a stationary bicycle for 20 minutes during each exposure condition at a workload pre-set to assure that each subject would attain an average minute ventilation of 50-60 1/min (BTPS). Exposure to 2.5 ppm sulfur dioxide alone led to a significant lowering of FVC, FEV1, and FEF50. Exposure to sulfur dioxide plus aerosol led to a significant decrease of FVC. Baseline comparisons reflected a significant decline in FVC, FEV1, FEF25, FEF50, FEF75, and FEF25-75 between the pre-ambient and post-exposure. This decline suggests a residual effect of the air pollutant exposures. Significant differences were also observed between the pre-aerosol and pre-sulfur dioxide exposures for FVC, FEV1, FEF50, and FEF25-75.

• Research Organization: Florida State Univ., Tallahassee (USA)
• OSTI ID: 5884320
• Country of Publication: United States
• Language: English

Related Subjects

560306* -- Chemicals Metabolism & Toxicology-- Man-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AEROSOLS
AIR POLLUTION
BIOLOGICAL EFFECTS
BODY
CHALCOGENIDES
COLLOIDS
DISPERSIONS
DYNAMIC FUNCTION STUDIES
EXERCISE
INHALATION
INTAKE
LUNGS
ORGANS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RESPIRATORY SYSTEM
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES