Table 3. Comparison of ultrasound assessments of the abdominal drawing-in maneuver, maximal expiration, and pelvic floor muscle maximum contraction during abdominal curl-up.

	Abdominal curl-up + ADIM (A)	Abdominal curl-up + ME (B)	Abdominal curl-up + PFMMC (C)	Post hoc
Movement distance of the lower bladder (cm)	0.7 ± 0.2a	−0.4 ± 0.2	1.1 ± 0.3	A ǀ B ǀ C

^aMean±SD. ADIM: abdominal drawing-in maneuver; ME: maximal expiration; PFMMC: pelvic floor muscle maximum contraction