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Figure 3

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

Figure 3

RER during exercise at similar percentages of VO 2peak in healthy adolescents and patients with CF. Vertical dashed lines correspond to the ventilatory threshold in both groups. Abbreviations: CF = cystic fibrosis; RER = respiratory exchange ratio; VO2peak = peak oxygen uptake. **P < 0.01; ***P < 0.001.

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