What can trigger exercise-induced bronchoconstriction (EIB)?

Exercise-induced bronchoconstriction (EIB) is commonly triggered by exposure to cold or dry air during physical exertion. When the air is cold or lacks humidity, it can lead to inflammation and narrowing of the airways in individuals who are sensitive, such as those with asthma or exercise-induced bronchoconstriction. During exercise, breathing rate increases, and more cold or dry air passes through the airways, exacerbating the condition.

Physical exertion in warm environments typically does not trigger EIB, as warm air is less likely to cause the airway irritation that cold air does. The intake of high amounts of fluids does not directly correlate with EIB, as hydration itself is not a known trigger. Resting after warm-up exercises is unlikely to induce bronchoconstriction since warm-up activities typically help to prepare the lungs and airways for more intense physical activity, reducing the likelihood of EIB. Overall, the impact of cold or dry air is significant in contributing to exercise-induced bronchoconstriction in susceptible individuals.