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Table 4 Respiratory flow during the interventions

From: Effects of treadmill exercise versus Flutter® on respiratory flow and sputum properties in adults with cystic fibrosis: a randomised, controlled, cross-over trial

  PEF (L/s) PEF:PIF
Control 0.68 ± 0.28 0.85 ± 0.14
Treadmill 1.68* ± 0.51 0.90 ± 0.10
Flutter® 1.53* ± 0.25 1.13* ± 0.37
  1. Data are presented as mean ± standard deviation for group values of peak expiratory flow (PEF) and ratio of peak expiratory to peak inspiratory flow (PEF:PIF). Mean difference and (95% CI): Treadmill v control PEF 1.00 L/s (0.82 to 1.18); Flutter® v control PEF 0.85 L/s (0.69 to 1.01); Flutter® v control PEF:PIF: 0.28 (0.11 to 0.45)
  2. *p < 0.01 compared to control