Figure 2
From: Relationship between daily physical activity and aerobic fitness in adults with cystic fibrosis
Measurements of incremental cycle exercise. a, b. Oxygen consumption (V’O2). c. O2 pulse (V’O2/HR). d. Ventilation (V’E) are shown in response to symptom-limited incremental cycle exercise in patients with cystic fibrosis (CF) and in healthy control subjects. Graphs represent mean ± SE values at rest; at 30, 50, 70, and 90 W during exercise; and at peak exercise. *p ≤ 0.01, CF versus control at a standardized work rate in watts.