A Study Measuring Asthma Control In Pediatric And Adolescent Subjects Whose Asthma Is Worsened By Activity Or Exercise

Inclusion criteria: * Diagnosed with persistent asthma for 3 months or longer. * Experienced worsened asthma symptoms during physical activity. * Using an inhaled steroid for the previous 4 weeks or longer (such as Aerobid, Azmacort, Flovent, Pulmicort, QVAR, and Vanceril). Exclusion criteria: * Used systemic steroids as either liquids, pills, or injections to treat asthma within the previous 3 months. * Have only intermittent, seasonal, or exercise-induced asthma, and not persistent asthma. * Admitted to a hospital within the previous 6 months due to asthma symptoms. * Any poorly controlled medical conditions that may make study participation unsafe or inappropriate in the opinion of the study physician (such as cystic fibrosis, congenital heart disease, insulin dependent diabetes, glaucoma, drug allergies, etc.) * The study physician will evaluate other medical criteria.