TABLE 2

Effects of airway clearance interventions on peak flow rates

Subjects nPEFR L·min-1PIFR L·min-1PEFR/PIFR ratioFrequency Hz
Huff17302.4±121.8124.8±85.22.80
Cough17280.2±114.6100.8±44.43.07
Vibration1794.8±43.863.6±16.21.518.4±0.4
Autogenic drainage1485.2±28.850.4±13.81.69
Flutter1767.8±18.063.0±16.21.1511.3±1.5
Percussion1849.8±8.450.4±6.00.997.3±0.3
Acapella1835.4±4.858.8±16.20.6413.5±1.7
PEP1826.4±9.057.6±12.00.47
  • Data are presented as n or mean±sd. Data from [49–51]. PEFR: peak expiratory flow rate; PIFR: peak inspiratory flow rate; PEP: positive expiratory pressure.