What is an exercise-related effect of SABAs?

What is an exercise-related effect of SABAs?

• A. Decrease heart rate and blood pressure.
• B. Satiety increase.
• C. Cause dehydration.
• D. Improved ventilation during exercise; may cause cardiovascular stimulation and skeletal muscle tremor.

Answer: (D)

SABAs work by activating beta-2 receptors in the airway smooth muscle, causing bronchodilation. This reduces airway resistance and improves airflow, which translates to better ventilation during exercise and less breathlessness. In addition, beta-adrenergic activity can spill over systemically, leading to cardiovascular stimulation (like a faster heart rate) and skeletal muscle tremor. That combination—better ventilation with possible tachycardia and tremor—is the exercise-related effect described. The other options aren’t typical effects of SABAs during exercise: they don’t generally decrease heart rate or blood pressure, they don’t cause a meaningful satiety increase, and dehydration isn’t a primary exercise-related effect of these drugs.

SABAs work by activating beta-2 receptors in the airway smooth muscle, causing bronchodilation. This reduces airway resistance and improves airflow, which translates to better ventilation during exercise and less breathlessness. In addition, beta-adrenergic activity can spill over systemically, leading to cardiovascular stimulation (like a faster heart rate) and skeletal muscle tremor.

That combination—better ventilation with possible tachycardia and tremor—is the exercise-related effect described. The other options aren’t typical effects of SABAs during exercise: they don’t generally decrease heart rate or blood pressure, they don’t cause a meaningful satiety increase, and dehydration isn’t a primary exercise-related effect of these drugs.