de Albuquerque Rodrigues Filho E, et al. - Exercise-induced bronchospasm (EIB) prevalence was assessed in a group of children and adolescents, aged between 10 and 20 years, with allergic rhinitis, to compare the treadmill running (TR) and eucapnic voluntary hyperventilation (EVH) challenge methods as diagnostic tools. The link between respiratory complaints on exercise and EIB was also evaluated. In these patients studied at the Pulmonology Department of the Hospital das Clínicas -UFPE- Recife, Brazil, a high prevalence of EIB was reported, with only moderate agreement between the challenges used to diagnose EIB. Exercising caution was advised when comparing these methods or interpreting their results interchangeably. Reported respiratory symptoms after exercise and EIB were not found to be related.