RT Journal Article SR Electronic T1 Exercise and asthma: β2-agonists and the competitive athlete JF Breathe JO breathe FD European Respiratory Society SP 64 OP 71 DO 10.1183/18106838.0701.064 VO 7 IS 1 A1 Boulet, L-P. A1 Hancox, R.J. A1 Fitch, K.D. YR 2010 UL http://breathe.ersjournals.com/content/7/1/64.abstract AB Educational aims Discuss the role of inhaled β-agonists in the management of exercise-induced asthma and exercise-induced bronchoconstriction. Review the beneficial versus untoward effects of inhaled β-agonists on asthma, exercise-induced asthma and exercise-induced bronchoconstriction. Report on current and past usage of these drugs by Olympic athletes. Summary Inhaled β-agonists effectively block exercise-induced asthma/exercise-induced bronchoconstriction (EIA/EIB). They are the treatment of choice for this condition and are used by many elite and Olympic athletes. However, regular or frequent use of inhaled β-agonists leads to an increase in the underlying severity of EIA/EIB and a reduction in their bronchoprotective and bronchodilator effects, which means that they become less effective at preventing and treating EIA/EIB. Emphasis should be placed on preventative measures and anti-inflammatory treatments such as inhaled corticosteroids in order to minimise the need for inhaled β-agonists to prevent EIA/EIB.