Which of the following is a cystic fibrosis-specific exercise consideration?

• A. No special monitoring needed.
• B. Only leg workouts are advised.
• C. Avoid aerobic activity.
• D. Monitor oxygen saturation, airway clearance needs, and increased energy expenditure.

Answer: (C)

In cystic fibrosis, exercise plans must be tailored to the lung disease and mucus clearance needs. The key factors to watch during activity are oxygen saturation, how the airways will need to be cleared around the session, and the higher energy cost of movement.

During exercise, the lungs’ ability to oxygenate blood can be challenged by airway obstruction and ventilation–perfusion mismatch, so tracking oxygen saturation with a pulse oximeter helps ensure safety and guides how hard to work or when to rest. Activity can also increase mucus production and airway clearance needs, so integrating or adjusting airway clearance techniques around exercise (before, during if needed, and after) helps keep the airways open and bronchial secretions manageable. Additionally, people with CF often burn more calories and tire more quickly because of the extra work of breathing and mucus clearance, so planning for higher energy expenditure, plus proper nutrition and hydration, is important for sustaining the activity.

Options that suggest no monitoring, restricting to leg workouts, or avoiding aerobic activity don’t fit CF care. Safe, beneficial exercise for CF typically includes monitoring oxygen levels, coordinating airway clearance, and accounting for increased energy demands, rather than avoiding aerobic work.