What best prevents exercise-induced bronchoconstriction for a child with asthma?

Inhaled short-acting beta-agonists (SABAs) are most effective in preventing exercise-induced bronchoconstriction, followed by inhaled mast cell stabilizers and anticholinergic agents (strength of recommendation [SOR]: A, multiple randomized control trials [RCTs]). Less evidence supports the use of leukotriene antagonists and inhaled corticosteroids, either individually or in combination (SOR: B). Underlying asthma, which commonly contributes to exercise-induced bronchoconstriction, should be diagnosed and controlled first (SOR: C).