Exercise-induced asthma typically occurs during which portions of exercise?

Exercise-induced asthma typically occurs during which portions of exercise?

• A. Only during the middle portion
• B. After exercise ends completely
• C. Within the first 6-12 minutes of exercise and the last 5-10 minutes
• D. Only during cool-down

Answer: (C)

During exercise, the air you breathe is warmed and humidified by the airways, but when ventilation climbs quickly, the airway lining dries and cools. This osmotic and thermal stress triggers release of mediators from cells in the airway, leading to bronchoconstriction. Because of this, symptoms often appear in two windows: right after activity has begun (in the early minutes when ventilation is rising) and again toward the end of sustained effort (as cumulative changes and inflammatory mediators build up). The option that specifies the first several minutes of exercise and the last several minutes accurately reflects this pattern of early and late-phase bronchoconstriction that characterizes exercise-induced asthma. In contrast, symptoms strictly in the middle, only after stopping, or only during cool-down don’t capture the common timing of EIA, which is tied to ongoing ventilation and the physiological changes it provokes during the activity itself. If a client experiences this pattern, strategies like a proper warm-up, carefully planned interval work, and having relief medications as prescribed can help manage symptoms during workouts.

During exercise, the air you breathe is warmed and humidified by the airways, but when ventilation climbs quickly, the airway lining dries and cools. This osmotic and thermal stress triggers release of mediators from cells in the airway, leading to bronchoconstriction. Because of this, symptoms often appear in two windows: right after activity has begun (in the early minutes when ventilation is rising) and again toward the end of sustained effort (as cumulative changes and inflammatory mediators build up). The option that specifies the first several minutes of exercise and the last several minutes accurately reflects this pattern of early and late-phase bronchoconstriction that characterizes exercise-induced asthma.

In contrast, symptoms strictly in the middle, only after stopping, or only during cool-down don’t capture the common timing of EIA, which is tied to ongoing ventilation and the physiological changes it provokes during the activity itself. If a client experiences this pattern, strategies like a proper warm-up, carefully planned interval work, and having relief medications as prescribed can help manage symptoms during workouts.