Dietz HP, Wilson PD, Clarke B. The use of perineal ultrasound to quantify levator activity and teach pelvic floor muscle exercises. Int Urogynecol J Pelvic Floor Dysfunct. 2001;12(3):166–8; discussion 168–9.

Article  CAS  PubMed  Google Scholar 

Bahrami S, Khatri G, Sheridan AD, Palmer SL, Lockhart ME, Arif-Tiwari H, Glanc P. Pelvic floor ultrasound: when, why, and how? Abdom Radiol (NY). 2021;46(4):1395–413. https://doi.org/10.1007/s00261-019-02216-8.

Article  PubMed  Google Scholar 

López-Liria R, Varverde-Martínez MLÁ, Padilla-Góngora D, Rocamora-Pérez P. Effectiveness of physiotherapy treatment for urinary incontinence in women: a systematic review. J Womens Health (Larchmt). 2019;28(4):490–501. https://doi.org/10.1089/jwh.2018.7140.

Article  PubMed  Google Scholar 

Mateus-Vasconcelos ECL, Ribeiro AM, Antônio FI, Brito LGO, Ferreira CHJ. Physiotherapy methods to facilitate pelvic floor muscle contraction: a systematic review. Physiother Theory Pract. 2018;34(6):420–32. https://doi.org/10.1080/09593985.2017.1419520.

Article  PubMed  Google Scholar 

Ikeda M, Mori A. Vaginal palpation versus transabdominal ultrasound in the comprehension of pelvic floor muscle contraction after vaginal delivery: a randomised controlled trial. BMC Womens Health. 2021;21(1):53. https://doi.org/10.1186/s12905-021-01203-w.

Article  PubMed  PubMed Central  Google Scholar 

Dietz HP. Pelvic floor ultrasound: a review. Clin Obstet Gynecol. 2017;60(1):58–81. https://doi.org/10.1097/GRF.0000000000000264.

Article  PubMed  Google Scholar 

Whittaker JL, Thompson JA, Teyhen DS, Hodges P. Rehabilitative ultrasound imaging of pelvic floor muscle function. J Orthop Sports Phys Ther. 2007;37(8):487–98. https://doi.org/10.2519/jospt.2007.2548.

Article  PubMed  Google Scholar 

Dietz HP. Ultrasound imaging of the pelvic floor. Part I: two-dimensional aspects. Ultrasound Obstet Gynecol. 2004;23(1):80–92. https://doi.org/10.1002/uog.939.

Article  CAS  PubMed  Google Scholar 

Czyrnyj CS, Labrosse MR, Graham RB, McLean L. UROKIN: a software to enhance our understanding of urogenital motion. Ann Biomed Eng. 2018;46(5):726–35. https://doi.org/10.1007/s10439-018-1989-7.

Article  PubMed  Google Scholar 

Sherburn M, Murphy CA, Carroll S, Allen TJ, Galea MP. Investigation of transabdominal real-time ultrasound to visualise the muscles of the pelvic floor. Aust J Physiother. 2005;51(3):167–70.

Article  PubMed  Google Scholar 

Martínez-Bustelo S, Ferri-Morales A, Corral-Gómez L, Castillo-García FJ, Castro-Varela V, Jácome MA. Transabdominal ultrasound to assess the displacement of the bladder base during abdominal and pelvic floor contractions in continent parous versus nulliparous women. Int Urogynecol J. 2022;33(8):2257–66. https://doi.org/10.1007/s00192-021-04756-4.

Article  PubMed  Google Scholar 

Thompson JA, O’Sullivan PB, Briffa K, Neumann P, Court S. Assessment of pelvic floor movement using transabdominal and transperineal ultrasound. Int Urogynecol J Pelvic Floor Dysfunct. 2005;16(4):285–92. https://doi.org/10.1007/s00192-005-1308-3.

Article  PubMed  Google Scholar 

Baessler K, O’Neill SM, Maher CF, Battistutta D. A validated self-administered female pelvic floor questionnaire. Int Urogynecol J. 2010;21(2):163–72. https://doi.org/10.1007/s00192-009-0997-4.

Article  PubMed  Google Scholar 

Mastwyk S, McClelland J, Cooper MM, Frawley HC. Pelvic floor muscle function in the standing position in women with pelvic floor dysfunction. Int Urogynecol J. 2022;33(9):2435–44. https://doi.org/10.1007/s00192-021-05003-6.

Article  PubMed  Google Scholar 

Rudavsky A, Turner T. Novel insight into the coordination between pelvic floor muscles and the glottis through ultrasound imaging: a pilot study. Int Urogynecol J. 2020;31(12):2645–52. https://doi.org/10.1007/s00192-020-04461-8.

Article  PubMed  Google Scholar 

Bø K. Pelvic floor muscle training is effective in treatment of female stress urinary incontinence, but how does it work? Int Urogynecol J Pelvic Floor Dysfunct. 2004;15(2):76–84. https://doi.org/10.1007/s00192-004-1125-0.

Article  PubMed  Google Scholar 

Sheng Y, Carpenter JS, Ashton-Miller JA, Miller JM. Mechanisms of pelvic floor muscle training for managing urinary incontinence in women: a scoping review. BMC Womens Health. 2022;22(1):161. https://doi.org/10.1186/s12905-022-01742-w.

Article  PubMed  PubMed Central  Google Scholar 

Talasz H, Kofler M, Lechleitner M. Misconception of the Valsalva maneuver. Int Urogynecol J. 2011;22(9):1197–8. https://doi.org/10.1007/s00192-011-1397-0.

Article  PubMed  Google Scholar 

Talasz H, Kremser C, Kofler M, Kalchschmid E, Lechleitner M, Rudisch A. Proof of concept: differential effects of Valsalva and straining maneuvers on the pelvic floor. Eur J Obstet Gynecol Reprod Biol. 2012;164(2):227–33. https://doi.org/10.1016/j.ejogrb.2012.06.019.

Article  PubMed  Google Scholar 

Frawley HC, Galea MP, Phillips BA, Sherburn M, Bø K. Effect of test position on pelvic floor muscle assessment. Int Urogynecol J Pelvic Floor Dysfunct. 2006;17(4):365–71. https://doi.org/10.1007/s00192-005-0016-3.

Article  PubMed  Google Scholar 

Dietz HP, Clarke B. The influence of posture on perineal ultrasound imaging parameters. Int Urogynecol J Pelvic Floor Dysfunct. 2001;12(2):104–6.

Article  CAS  PubMed  Google Scholar 

Schober P, Boer C, Schwarte LA. Correlation coefficients: appropriate use and interpretation. Anesth Analg. 2018;126(5):1763–8. https://doi.org/10.1213/ANE.0000000000002864.

Article  PubMed  Google Scholar 

Motulsky H. Intuitive biostatistics: a nonmathematical guide to statistical thinking. 4th ed. Oxford: Oxford University Press; 2017.

Google Scholar 

Karch JD. bmtest: a Jamovi module for Brunner–Munzel’s test—a robust alternative to Wilcoxon–Mann–Whitney’s test. Psych. 2023;5(2):386–95.

Article  Google Scholar 

Thompson JA, O’Sullivan PB, Briffa NK, Neumann P. Comparison of transperineal and transabdominal ultrasound in the assessment of voluntary pelvic floor muscle contractions and functional manoeuvres in continent and incontinent women. Int Urogynecol J Pelvic Floor Dysfunct. 2007;18(7):779–86. https://doi.org/10.1007/s00192-006-0225-4.

Article  PubMed  Google Scholar 

Leitner M, Moser H, Taeymans J, Kuhn A, Radlinger L. Pelvic floor muscle displacement during voluntary and involuntary activation in continent and incontinent women: a systematic review. Int Urogynecol J. 2015;26(11):1587–98. https://doi.org/10.1007/s00192-015-2700-2.

Article  PubMed  Google Scholar