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Figure 2

From: Ventilatory response to exercise in adolescents with cystic fibrosis and mild-to-moderate airway obstruction

Figure 2

Changes in VE/ VO 2 -slope, VE/ VCO 2 -slope, and P ET CO 2 during exercise at similar percentages of VO 2peak in the healthy adolescents and the adolescents with CF. Dashed lines represent the ventilatory threshold in both groups. Abbreviations: CF = cystic fibrosis; PETCO2 = partial end-tidal carbon dioxide tension; VE/VCO2-slope = slope of the relationship between minute ventilation and carbon dioxide output; VE/VO2-slope = slope of the relationship between minute ventilation and oxygen uptake; VO2peak = peak oxygen uptake. *P < 0.05; **P < 0.01.

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