BC Environmental and Occupational Health Research Network

Two types of studies are sought to evaluate cardiovascular and respiratory effects in healthy human volunteers, aged 55 and above. In Phase 1, volunteers will be exposed to ozone alone, at concentrations between 60 and 100 ppb, in a controlled laboratory setting. In Phase 2, volunteers will be exposed to real-world ambient air pollution at sites with ozone concentrations comparable to those used in Phase 1.