Clinical Study

Distensibility and Strength of the Pelvic Floor Muscles of Women in the Third Trimester of Pregnancy

Table 2

Comparison of the values found using the modified Oxford scale, surface EMG during maximum voluntary contraction, and Epi-no.

VariableGroup MeanStandard deviationMinimumMaximumMedianP

OxfordNulliparous302.530.571.003.003.000.005*
Multiparous302.060.641.003.002.00

sEMG MVCNulliparous3045.3512.2417.2769.0947.860.003**
Multiparous3035.7911.6617.0761.4936.55

Epi-noNulliparous3018.052.1413.5023.0017.750.013**
Multiparous3019.391.9216.5024.0019.00

sEMG MVC: surface electromyography during maximum voluntary contraction.
*Mann-Whitney; **Student’s t-test.