What is the recommended timing for taking rapid-acting beta2-agonists before exercise?

What is the recommended timing for taking rapid-acting beta2-agonists before exercise?

• A. No prophylaxis before exercise.
• B. Rapid-acting beta2-agonists inhaled 10-15 minutes before exercise.
• C. Beta2-agonists after exercise only.
• D. Oral steroids before exercise.

Answer: (B)

For exercise-induced bronchoconstriction, fast-acting inhaled beta2-agonists are used before activity to prevent symptoms. These medicines work quickly to relax airway smooth muscle, producing bronchodilation within minutes and typically peaking as you begin exercising. Taking a rapid-acting beta2-agonist about 10–15 minutes before starting exercise ensures the protective bronchodilation is active during the period when airway narrowing is most likely to occur. Using it after exercise won’t prevent problems during activity, and oral steroids don’t provide the immediate prophylaxis needed for a workout. They take longer to have an effect and are used for longer-term asthma control rather than pre-exercise prevention.

For exercise-induced bronchoconstriction, fast-acting inhaled beta2-agonists are used before activity to prevent symptoms. These medicines work quickly to relax airway smooth muscle, producing bronchodilation within minutes and typically peaking as you begin exercising. Taking a rapid-acting beta2-agonist about 10–15 minutes before starting exercise ensures the protective bronchodilation is active during the period when airway narrowing is most likely to occur. Using it after exercise won’t prevent problems during activity, and oral steroids don’t provide the immediate prophylaxis needed for a workout. They take longer to have an effect and are used for longer-term asthma control rather than pre-exercise prevention.