keywords BRONCHIAL RESPONSIVENESS EUCAPNIC VOLUNTARY HYPERVENTILATION EXERCISE-INDUCED BRONCHOCONSTRICTION EXHALED NITRIC-OXIDE INCREASED URINARY-EXCRETION LONG-TERM TREATMENT Life Sciences & Biomedicine MAST-CELL ACTIVATION MILD ASTHMA OPTIMAL ASTHMA CONTROL PROSTAGLANDIN D-2 METABOLITE Respiratory System Science & Technology