Table 4.
Percentage changes in LHap diameter and LH area measured by 3D-TPUS and MRI from rest to contraction in both groups
| Measurement | UpfmC (n=52) | NpfmC (n=21) | P-value |
|---|---|---|---|
| 3D-TPUS | |||
| LHap at rest (mm) | 77.51±11.23 | 66.51±10.33 | <0.001 |
| LHap at contraction (mm) | 68.23±8.72 | 54.39±12.10 | <0.001 |
| Mean decrease (%) | 10.51±7.14 | 18.57±5.18 | <0.001 |
| LH area at rest (cm2) | 17.92±1.86 | 15.83±1.27 | <0.001 |
| LH area at contraction (cm2) | 17.53±1.29 | 14.20±2.11 | <0.001 |
| Mean decrease (%) | 4.07±1.40 | 10.19±3.51 | <0.001 |
| MRI | |||
| LHap at rest (mm) | 66.70±3.12 | 61.63±1.01 | <0.001 |
| LHap at contraction (mm) | 59.57±4.30 | 51.50±2.09 | <0.001 |
| Mean decrease (%) | 8.08±4.61 | 14.41±3.38 | <0.001 |
| LH area at rest (cm2) | 17.14±1.09 | 15.37±0.65 | <0.001 |
| LH area contraction (cm2) | 16.63±1.77 | 13.18±0.74 | <0.001 |
| Mean decrease (%) | 2.59±2.20 | 3.55±3.30 | <0.001 |
LHap diameter, levator hiatal antero-posterior diameter; LH area, levator hiatal area; 3D-TPUS, 3-dimensional transperineal ultrasound; MRI, magnetic resonance imaging; UpfmC, underactive pelvic floor muscle contraction; NpfmC, normal pelvic floor muscle contraction.