Table 2.
Comparison of mean normalized amplitude of the sEMG signal from the pelvic floor muscles (%MVC) between the groups
| Mean amplitude (% MVC) | |||||||
|---|---|---|---|---|---|---|---|
| Trial | 30s trial | 60s trial | 90s trial | ||||
| Group | n | Mean (%) | SD | Mean (%) | SD | Mean (%) | SD |
| I (20Hz/2mm) | 12 | 34.41 | 6.96 | 37.33 | 9.02 | 38.41 | 9.61 |
| II (40Hz/4mm) | 10 | 47.43 | 17.04 | 43.70 | 13.03 | 48.67 | 15.56 |
| III (control) | 11 | 35.23 | 13.22 | 31.13 | 9.09 | 33.22 | 11.91 |
| pa(I/II/III) | 0.16 | 0.056 | 0.06 | ||||
| p (I/II) | 0.079 | 0.37 | 0.18 | ||||
| p (I/III) | 0.99 | 0.36 | 0.6 | ||||
| p (II/III) | 0.11 | 0.031 | 0.026 | ||||
pa - Friedman’s ANOVA
p - Tukey post hoc test