Table 3.
Paired-sample t-tests comparing airflow outcomes between interval 1 and 2.
| Variable | Interval 1 (0–15 s) | Interval 2 (16–30 s) | t | p (two-tailed) |
|---|---|---|---|---|
| Insp. Airflow Duration | ||||
| Reading words | 5.10 (0.97) | 5.30 (0.68) | −1.32 | NS |
| Reading text | 2.50 (0.76) | 1.60 (0.60) | 6.84 | <0.001 |
| Object Naming | 5.10 (0.80) | 5.80 (0.77) | −4.24 | <0.001 |
| Semantic VFT | 4.40 (0.90) | 4.20 (0.91) | −0.80 | NS |
| Phonemic VFT | 4.60 (0.89) | 4.50 (0.77) | −0.85 | NS |
| Exp. Airflow Duration | ||||
| Reading words | 9.90 (0.97) | 9.70 (0.69) | 1.19 | NS |
| Reading text | 12.50 (0.76) | 9.70 (2.70) | 4.78 | <0.001 |
| Object Naming | 9.80 (0.80) | 9.20 (0.77) | 4.25 | <0.001 |
| Semantic VFT | 10.60 (0.88) | 10.70 (0.88) | −0.91 | NS |
| Phonemic VFT | 10.30 (0.89) | 10.50 (0.77) | −0.87 | NS |
| Peak Insp. Airflow | ||||
| Reading words | −0.89 (0.31) | −0.96 (0.36) | 1.32 | NS |
| Reading text | −2.20 (0.80) | −1.90 (0.70) | −1.30 | NS |
| Object Naming | −0.90 (0.39) | −0.83 (0.45) | −0.62 | NS |
| Semantic VFT | −1.50 (0.44) | −1.30 (0.48) | −2.12 | <0.05 |
| Phonemic VFT | −1.40 (0.44) | −1.20 (0.49) | −3.99 | <0.001 |
| Peak Exp. Airflow | ||||
| Reading words | 0.64 (0.23) | 0.73 (0.28) | −1.99 | NS |
| Reading text | 0.69 (0.28) | 0.76 (0.36) | −1.55 | NS |
| Object Naming | 0.67 (0.28) | 0.69 (0.36) | −0.46 | NS |
| Semantic VFT | 1.00 (0.50) | 1.10 (0.48) | −1.17 | NS |
| Phonemic VFT | 1.10 (0.57) | 1.10 (0.68) | −0.08 | NS |
| Insp. Volume | ||||
| Reading words | −1.80 (0.65) | −2.25 (0.61) | 5.67 | <0.001 |
| Reading text | −1.63 (0.67) | −1.10 (0.58) | −3.63 | <0.01 |
| Object Naming | −1.80 (0.57) | −2.21 (0.69) | 4.21 | <0.001 |
| Semantic VFT | −2.22 (0.71) | −2.10 (0.69) | −1.11 | NS |
| Phonemic VFT | −2.40 (0.77) | −2.10 (0.78) | −2.63 | <0.05 |
| Exp. Volume | ||||
| Reading words | 1.97 (0.58) | 2.22 (0.70) | −3.11 | <0.01 |
| Reading text | 1.66 (0.50) | 1.32 (0.59) | 3.51 | <0.01 |
| Object Naming | 1.97 (0.71) | 2.00 (0.68) | −0.26 | NS |
| Semantic VFT | 1.91 (0.64) | 2.22 (0.79) | −3.63 | <0.01 |
| Phonemic VFT | 2.01 (0.86) | 2.20 (0.88) | −1.98 | NS |
Mean (standard deviations).