Which statement best describes the CF exercise prescription?

Which statement best describes the CF exercise prescription?

• A. Frequency: most days; Intensity: moderate to vigorous; Time: 30 to 60 min; Type: aerobic and resistance.
• B. Frequency: daily; Intensity: low; Time: 20 minutes; Type: swimming only.
• C. Frequency: once a week; Intensity: light; Time: 15 minutes; Type: stretching.
• D. Frequency: none; Intensity: high; Time: 60-120 minutes; Type: strength only.

Answer: (A)

For CF, the exercise approach that fits best is regular activity across most days, with a mix of aerobic and resistance work performed at a moderate to vigorous level for a meaningful duration. This aligns with guidelines that emphasize consistency (about 3–5 days per week), enough time per session (typically 20–60 minutes, with 30–60 minutes being common for many individuals), and including both cardiovascular and strength components to support lung health, endurance, and overall function. The statement that describes this combination—frequency most days, intensity moderate to vigorous, 30–60 minutes, and a mix of aerobic and resistance exercise—matches those recommendations and provides a balanced stimulus. Other options fall short because they either limit the mode to a single activity (swimming only) or prescribe too little frequency or duration (daily but low intensity for only 20 minutes, or once a week), or propose a high-intensity, long-duration program focused only on strength with no aerobic component or regular frequency. These do not provide the comprehensive, tolerable, and beneficial workload recommended for CF.

For CF, the exercise approach that fits best is regular activity across most days, with a mix of aerobic and resistance work performed at a moderate to vigorous level for a meaningful duration. This aligns with guidelines that emphasize consistency (about 3–5 days per week), enough time per session (typically 20–60 minutes, with 30–60 minutes being common for many individuals), and including both cardiovascular and strength components to support lung health, endurance, and overall function. The statement that describes this combination—frequency most days, intensity moderate to vigorous, 30–60 minutes, and a mix of aerobic and resistance exercise—matches those recommendations and provides a balanced stimulus.

Other options fall short because they either limit the mode to a single activity (swimming only) or prescribe too little frequency or duration (daily but low intensity for only 20 minutes, or once a week), or propose a high-intensity, long-duration program focused only on strength with no aerobic component or regular frequency. These do not provide the comprehensive, tolerable, and beneficial workload recommended for CF.