6 PAF-study: results of a randomized controlled trial 155 Primary outcome Regarding the analysis of repeated measures, the PFPT group was found to be more effective for reducing pelvic floor muscle tone measured with EMG compared to control group (p<0.001) (Figure 2; Table 2). The mean estimated difference between groups post-treatment at first follow-up, at 8 weeks from baseline was -1.88 µV; 95% CI, -2.49 to -1.27 (p<0.001). At 20 weeks, when both groups had received PFPT, the mean difference between PFPT and control group showed no significance (- 0.05 µV; 95% CI. -.82 to .71; p=0.889) (Table 2). The mean tone of the pelvic floor at rest measured with EMG, decreased significantly from pre-to post-treatment in the PFPT- group (p<0.001) and remained significant from baseline to 20-week follow-up (p<0.001) (Table 2). In the control group, the mean resting tone of the pelvic floor did not decrease significantly at first follow-up (p=0.192). At 20-week follow-up the control group showed a significant decrease in mean resting tone of the pelvic floor after treatment (p<0.001) (Table 2). Regarding the analysis of repeated measures, the PFPT group was found to be more effective for reducing EAS-tone measured with EMG, compared to control group (p<0.001) (Figure 2; Table 2). The mean estimated difference between groups at posttreatment was -1.44 µV; 95% CI. -2.77 to -.12 (p<0.05). At 20 weeks, no significant difference was found between groups (0.61 µV; 95% CI. -.62 to 1.84; p=0.331) (Table 2). The mean score, tone at rest of the EAS in the PFPT- group, decreased significant from pre-to post-treatment (p<0.001) and remained significant at 20-week follow-up (p<0.05). No significant decrease was found in the mean resting tone of the EAS at first follow-up in the control group (p=0.173). After intervention at 20-week followup, the mean resting tone of the EAS decreased significant in the control group (p<0.001) (Table 2).
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