Intervention | Frequency Hz |
Vibration | 8.4±0.4 (7.3–10.0) |
Percussion | 7.3±0.3 (6.5–8.0) |
Flutter® | 11.3±1.5 (7.5–13.7)*** |
Acapella® | 13.5±1.7 (10.0–18.3)*** |
Data are presented as mean±sd of means of each subject. p-value is significantly different from vibration. ***: p<0.001.