Is voluntary pelvic floor muscles contraction important for sexual function in women with pelvic floor disorders?

Neurourol Urodyn. 2019 Sep;38(7):2001-2009. doi: 10.1002/nau.24109. Epub 2019 Jul 18.

Abstract

Aims: To investigate relationships between pelvic floor muscles (PFM) and sexual function (SF) in sexually active (SA) and not-SA (NSA) women with pelvic floor disorders (PFD).

Methods: In 350 women with PFD: 173 (49.4%) SA, 177 (50.6%) NSA, Pelvic Organ Prolapse (POP)-Quantification, PFM tone, and strength were evaluated. Transperineal ultrasound (TPS) measured genital hiatus (GH) diameter, bladder neck (BN) movement. Pelvic Organ Prolapse/Incontinence Sexual Questionnaire, IUGA-Revised (PISQ-IR), and Female Sexual Function Index (FSFI) were used. SA women were dichotomized according to muscle strength (weak/strong) and tone (normal/hypoactive).

Results: FSFI scores reflected sexual dysfunction in 63.5% SA women. 32.2% partnered NSA stated PFD the reason for sexual inactivity. NSA women had higher POP stages and hypoactive PFM rates compared to SA: 72 (40.7%) vs 52 (30.1%), P = .04. TPS GH diameter did not differ between SA and NSA at rest, contraction, and did not correlate with SF. BN length was longer in SA at rest (15.0 ± 7.0 vs 13.1 ± 9.4, P = .03) and contraction (19.7 ± 7.0 vs 16.7 ± 10.2, P = .006); 30 (8.6%) subjects depressed BN during contraction. GH change at contraction correlated with Oxford Grading Scale (rps = 0.41; P < .001), and was smaller in women with nonfunctioning vs normal/underactive PFM (P < .001). Women with hypoactive PFM had lower SF in PISQ-IR Global quality and FSFI Desire domains vs normal tone. BN length at rest, contraction, and total mobility correlated with several PISQ-IR and FSFI domains.

Conclusions: In SA women with PFD, lower rates of hypoactive PFM tone were found. The ability to contract PFM did not influence SF. Greater mobility of BN correlated with lower SF.

Keywords: IUGA-Revised, transperineal ultrasound; Oxford grading scale; Pelvic Organ Prolapse/Incontinence Sexual Questionnaire; female sexual function; genital hiatus; pelvic floor muscles.

MeSH terms

  • Adult
  • Aged
  • Female
  • Humans
  • Middle Aged
  • Muscle Contraction / physiology*
  • Muscle Tonus / physiology*
  • Pelvic Floor / physiopathology*
  • Pelvic Floor Disorders / physiopathology*
  • Sexual Behavior / physiology*
  • Sexual Dysfunction, Physiological / physiopathology*
  • Surveys and Questionnaires
  • Urinary Incontinence / physiopathology