Table 2.
Effect of hypoglossal nerve stimulation treatment on retrusive tongue muscle contractile properties
| Maximum twitch tension(mN) | Contraction time (ms)* | Half-decay time (ms)* | Maximum tetanic tension (mN) | Fatigue Index (%)* | ||
|---|---|---|---|---|---|---|
| Young Adult | Control | 302.80 (14.24) | 9.15 (0.23) | 35.15 (0.98) | 930.05 (48.06) | 0.84 (0.02) |
| 10 Hz | 303.96 (15.40) | 9.75 (0.29) | 38.41 (1.24) | 937.18 (51.97) | 0.88 (0.03) | |
| 100Hz | 303.24 (14.50) | 9.79 (0.28) | 38.45 (1.16) | 901.92 (48.93) | 0.92 (0.02) | |
| Middle Aged | Control | 285.97 (12.70) | 9.73 (0.22) | 37.04 (0.95) | 874.68 (42.86) | 0.82 (0.02) |
| 10 Hz | 312.23 (15.68) | 9.94 (0.31) | 37.98 (1.34) | 951.46 (52.91) | 0.87 (0.03) | |
| 100Hz | 310.91 (14.74) | 10.84 (0.29) | 40.32 (1.24) | 909.75 (49.72) | 0.90 (.03) | |
| Old | Control | 321.10 (11.46) | 10.09 (0.21) | 37.14 (0.91) | 889.86 (38.66) | 0.83 (0.02) |
| 10 Hz | 300.29 (14.35) | 10.34 (0.29) | 38.99 (1.24) | 851.10 (48.43) | 0.89 (0.03) | |
| 100Hz | 319.59 (13.42) | 10.38 (0.27) | 38.61 (1.66) | 938.50 (45.30) | 0.88 (0.02) |
Data are expressed as averages (standard error).
*
p<.05 = significant differences among treatment groups.