Table 4. Distribution of oscillometric parameter data from non-cough group and cough group during forced expiratory technique, and comparison of the data during the application of the technique.
| Oscillometric parameters | Pre-FET | Post-huff | Post-FET | p-value | |||
|---|---|---|---|---|---|---|---|
| NCG (n=25) M±SD (95%CI) |
CG (n=18) M±SD (95%CI) |
NCG (n=25) M±SD (95%CI) |
CG (n=18) M±SD (95%CI) |
NCG (n=25) M±SD (95%CI) |
CG (n=18) M±SD (95%CI) |
||
| Z5 (kPa/L/s) | 0.64±0.24 (0.55–0.74] |
0.74±0.30 (0.59–0.88) |
0.73±0.26 (0.62–0.83) |
0.91±0.37 (0.72–1.09) |
0.74±0.27 (0.63–0.86) |
0.84±0.31 (0.69–1.00) |
0.216 |
| Z5% | 162.88±70.45 (133.81–191.96] |
167.43±63.37 (135.91–198.94) |
190.08±101.03 (148.38–231.78) |
206.71±77.94 (167.95–245.47) |
190.26±84.96 (155.19–225.33) |
196.16±78.59 (157.08–235.24) |
0.095 |
| R5 (kPa/L/s) | 0.59±0.21 (0.51–0.68] |
0.67±0.26 (0.54–0.80) |
0.68±0.23 (0.58–0.77) |
0.83±0.32 (0.67–0.99) |
0.70±0.25 (0.59–0.80) |
0.77±0.27 (0.64–0.91) |
0.250 |
| R5% | 99.62±24.33 (89.57–109.66] |
110.36±31.95 (94.47–126.25) |
115.14±31.47 (102.14–128.13) |
137.39±41.66 (116.67–158.11) |
117.44±32.26 (104.12–130.76) |
130.14±43.87 (108.32–151.96) |
0.702 |
| R20 (kPa/L/s) | 0.46±0.11 (0.42–0.50] |
0.48±0.10 (0.43–0.54) |
0.51±0.13 (0.46–0.57) |
0.56±0.13 (0.50–0.63) |
0.52±0.14 (0.46–0.57) |
0.54±0.13 (0.47–0.60) |
0.539 |
| R20% | 92.78±15.47 (86.39–99.16] |
99.81±18.00 (90.86–108.76) |
104.49±22.04 (95.40–113.59) |
116.24±25.43 (103.60–128.89) |
104.21±21.64 (95.28–113.14) |
111.08±27.61 (97.35–124.81) |
0.156 |
| X5 (kPa/L/s) | -0.24±0.13 (-0.29–(-0.19)] |
-0.30±0.15 (-0.37–(-0.22)) |
-0.25±0.15 (-0.32–(-0.19)) |
-0.35±0.20 (-0.45–(-0.26)) |
-0.26±0.14 (-0.31–(-0.20)) |
-0.33±0.17 (-0.41–(-0.25)) |
0.058 |
| X5% | 179.71±79.76 (146.79–212.64) |
208.37±92.08 (162.58–254.16) |
187.74±90.13 (150.54–224.94) |
252.24±134.91 (185.15–319.33) |
187.85±80.36 (154.68–221.01) |
235.05±113.46 (178.63–291.47) |
0.118 |
M: mean; SD: standard deviation; n: number; NCG: non-cough group; CG: cough group; R5: resistance at 5 Hz; R20: resistance at 20 Hz; X5: reactance at 5 Hz; Z5: impedance at 5 Hz (all expressed as kPa/L/s); FET: forced expiration technique; p-value: comparison between the effect of the groups (NCG and CG) by the repeated measures ANOVA test, with a p-value≤0.05.