Effects of single (VD-1) and multiple simulated birth traumas (VD-3) on amplitudes of urethral baseline pressure (UBP; A), urethral responses during sneezing (A-URS; B), and abdominal pressure (Pabd). Data are expressed as means ± SE of 6 animals per group. **P < 0.001, compared with the sham group (one-way ANOVA followed by Dunnett's multiple comparison test). #P < 0.05, compared with the VD-1 group (unpaired t-test). NS, not significant (unpaired t-test).