Table 3 .

Results of Main Effects for the Interaction between Time and Intervention (N = 81)

Measure	SS	MS	F	df	Significance
Sonar assessment, mm
Levator hiatus at rest	204.815	51.204	1.110	4, 156	0.35
Levator hiatus with Valsalva	212.366	55.232	0.695	3.845, 149.955	0.59*
Levator hiatus with contraction	433.347	108.337	1.954	4, 156	0.11
Thickness of perineal body	89.294	40.354	1.483	2.213, 86.297	0.23†
Thickness of puborectalis (left)	7.821	2.211	1.006	3.538, 137.975	0.40*
Thickness of puborectalis (right)	15.222	4.197	2.642	3.627, 141.441	0.04†‡
Movement of puborectalis	601.451	150.363	5.500	4, 156	0.00‡
PERFECT
Levator ani, endurance, s	45.985	11.496	1.631	4, 156	0.17
Levator ani, repetitions	57.828	14.457	3.253	4, 156	0.01‡
Levator ani, fast contractions	146.848	36.712	5.563	4, 156	0.00‡
EMG of the pelvic floor muscles
Levator ani, EMG with MVC, mV	277.251	73.625	0.441	3.766, 146.863	0.77*
Levator ani, endurance with EMG, s	904.283	226.071	1.256	4, 156	0.29
Abdominal muscle assessment
Abdominal muscle, EMG, mμ	506.272	126.57	4.260	4, 156	0.00‡
Abdominal muscle, PBU, mmHg	394.819	98.705	9.759	4, 156	0.00†‡
Quality of life domains
General health	951.295	237.824	1.346	4, 156	0.26
Prolapse impact	3,036.537	759.134	1.576	4, 156	0.19
Role limitations	1,066.525	290.067	0.397	3.677, 62.506	0.80*
Physical limitations	2,130.041	594.682	0.814	3.582, 60.891	0.51*
Social limitations	1292.459	380.455	0.770	3.397, 55.949	0.53*
Personal limitations	8,787.782	2,670.144	3.236	3.291, 50.983	0.03†‡
Emotional limitations	2,426.307	653.236	1.007	3.714, 57	0.41*
Sleep disturbance	3,051.957	762.989	1.983	4, 68	0.11
Severity of prolapse	1,288.194	353.138	1.285	3.648, 56.060	0.29*

^*Huynh-Feldt corrected analysis.

^†Greenhouse–Geisser corrected analysis.

^‡Statistically significant difference at p < 0.05.

SS = sum of squares; MS = mean square; PERFECT = power, endurance, repetitions, every contraction timed; EMG = electromyography; MVC = maximum voluntary contraction; PBU = pressure biofeedback unit.