This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Bø, K., Hilde, G., Staer-Jensen, J., Braekken, I. H. (2011) transducer (RAB 4-7l/obstetric) was used. Measurements were performed in the axial plane of minimal hiatal dimensions. Muscle length was calculated as circumference of the LH minus the suprapubic arch. Differences between groups were analyzed using Wilcoxon Signed Ranks Test. Significance level was set to 0.05.Results. There was a significant reduction of the LH area (p<.001)) and muscle length (p<.001) during PFM contraction, but not during contraction according to the Paula method, p=.51 and p=.31, respectively.Conclusions. The Paula method did not facilitate PFM contraction.