Abstract
Purpose of the study: The analyses of exhaled breath (EB) and exhaled breath condensate (EBC) have been established as methods for the diagnosis and monitoring of lung inflammatory diseases in human medicine. The application of non-invasive diagnostic techniques in the investigation of lower airway inflammation in horses holds much appeal. The aims of this study were to (i) investigate whether both EB and EBC could be obtained from Thoroughbred racehorses in the field setting, and (ii) investigate the effects of exercise per se on the concentrations of exhaled nitric oxide (NO) and carbon monoxide (CO) and EBC pH.