Table 2.
Maximal velocities of the swallowing structures
| Neutral | Comfortable chin-down | Strict chin-tuck | |
|---|---|---|---|
| Hyoid, maximal velocity (mm/s) | |||
| Horizontal* | 55.77 (30.45)b | 50.36 (29.90)c | 36.71 (20.37)b,c |
| Vertical | 53.26 (22.88) | 56.11 (25.47) | 60.83 (35.74) |
| 2D | 125.16 (51.12) | 113.53 (43.18) | 104.51 (57.06) |
| Epiglottic base, maximal velocity (mm/s) | |||
| Horizontal | 83.88 (49.31) | 83.44 (45.44) | 77.73 (35.07) |
| Vertical | 72.82 (32.28)a | 86.86 (41.47) | 98.68 (49.02)a |
| 2D | 127.76 (54.28)a | 148.95 (72.51) | 159.16 (73.63)a |
| Vocal cords, maximal velocity (mm/s) | |||
| Horizontal | 28.67 (16.48) | 32.72 (13.53) | 35.29 (25.27) |
| Vertical | 103.76 (44.80) | 90.91 (53.38) | 91.14 (49.16) |
| 2D | 109.10 (42.57) | 101.19 (52.08) | 105.45 (60.56) |
2D two-dimensional
* p < 0.01 using a repeated-measure ANOVA
aSignificantly different at p < 0.05 by Bonferroni-corrected pairwise comparisons
b,cSignificantly different at p < 0.01 by Bonferroni-corrected pairwise comparisons