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Trainability of the pelvic floor. A prospective study during pregnancy and after delivery
Nielsen CA, Sigsgaard I, Olsen M, Tolstrup M, Danneskiold-Samsoee B, Bock JE
Acta Obstetricia et Gynecologica Scandinavica 1988;67(5):437-440
clinical trial
4/10 [Eligibility criteria: Yes; Random allocation: No; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The contractibility and trainability of the pelvic floor were investigated during pregnancy and after vaginal delivery in 86 healthy primiparae. One group (TG) (n = 38) was instructed in training the pelvic floor from the 33rd week of pregnancy, whereas the other group (non-TG) (n = 39) was not. Both groups were measured by perineometry five times between 33rd-39th week of pregnancy and approximately 8 weeks after delivery. Half of the women were also measured 8 months post partum. At the beginning of the study both groups showed the same strength of the pelvic floor. 8 weeks and 8 months after delivery the TG were significantly (p < 0.05) better able to contract the pelvic floor compared with the non-TG. 8 months post partum, the TG had regained the initial values of pelvic floor contraction as from 33rd week of pregnancy, whereas the non-TG had not. During pregnancy there was a better ability to contract the pelvic floor in the TG vis-a-vis the non-TG, though not significantly so. No difference in the course of delivery was observed, and the frequency of complications was the same in the two groups.

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