Table 4 Comparison of pelvic floor electromyography data (median ± standard deviation, [95% confidence interval]) between cesarean section postpartum women and vaginal birth postpartum women at 6–8 weeks postpartum

Pre-baseline stage

Average

(< 4uv)

6.5 ± 4.077 [5.965–7.035]

3.6 ± 3.267 [3.242–3.958]

***

Variability

(< 0.2)

0.16 ± 0.164 [0.138–0.182]

0.17 ± 0.371 [0.129–0.211]

***

Partial score

-

45 ± 26.843 [41.477–48.523]

75 ± 24.216 [72.347–77.653]

***

Fast muscle (type II fiber) stage

Maximum

(> 40uv)

39.2 ± 18.087 [36.826–41.574]

31.4 ± 16.966 [29.541–33.259]

***

Rising time

(< 0.5s)

0.47 ± 0.218 [0.441–0.499]

0.5 ± 0.251 [0.472–0.528]

P < 0.171

Recovery time

(< 0.5s)

0.55 ± 0.313 [0.509–0.591]

0.56 ± 0.441 [0.512–0.608]

P < 0.175

Partial score

-

81 ± 15.996 [78.901–83.099]

75 ± 22.981 [72.482–77.518]

***

Slow muscle (type I fiber) stage

Average

(> 35uv)

30.2 ± 13.14 [28.475–31.925]

22.5 ± 12.68 [21.111–23.889]

***

Variability

(< 0.2)

0.21 ± 0.108 [0.196–0.224]

0.24 ± 0.142 [0.224–0.256]

***

Partial score

-

72 ± 17.338 [69.724–74.276]

58 ± 21.288 [55.668–60.332]

***

Endurance stage

Average

(> 30uv)

26.3 ± 11.832 [24.747–27.853]

18.4 ± 11.32 [17.160–19.640]

***

Variability

(< 0.2)

0.2 ± 1.245 [0.037–0.363]

0.23 ± 0.13 [0.216–0.244]

**

Last/First 10 s ratio

(0.8–1.2)

0.97 ± 0.194 [0.945–0.995]

0.96 ± 0.554 [0.899–1.021]

P < 0.979

Partial score

-

80 ± 14.368 [78.114–81.886]

69 ± 17.487 [67.084–70.916]

***

Post-baseline stage

Average

(< 4uv)

4.4 ± 3.579 [3.930–4.870]

2.3 ± 5.592 [1.687–2.913]

***

Variability

(< 0.2)

0.16 ± 0.167 [0.138–0.182]

0.2 ± 0.382 [0.158–0.242]

***

Partial score

-

70 ± 25.892 [66.602–73.398]

83 ± 24.187 [80.350–85.650]

***

Total score

-

***