Toward the Development of a Vaginal Finger-Cot Device for Measuring Pelvic Floor Muscles Strength

  • Augusto Gil PascoalEmail author
  • Patrícia Silva
  • Fátima Sancho
Part of the Lecture Notes in Computational Vision and Biomechanics book series (LNCVB, volume 29)


Stress urinary incontinence (SUI) refers to the involuntary leakage of urine on effort or exertion, like sneezing or coughing and is a common problem in female population. Pelvic floor muscle (PFM) training has been demonstrated to be effective in the prevention and treatment of SUI. Vaginal squeeze pressure (VSP) is the most commonly used parameter on PFM strength, measured by vaginal palpation, by pressure transducers or by self-reported to the physiotherapist. Vaginal palpation is clinically relevant to evaluate PFM activation and to guide patient about correct PFM contraction. Vaginal palpation is questionable as a reliable method to quantify PFM strength nevertheless some detailed palpation scoring systems exist to quantify PFM strength. No single measurement instrument gives an overall view of PFM function. A combination of the advantages of vaginal palpation with a reliable measure of the VSP, in a single instrument, is a challenging purpose. This chapter reports the responsiveness and validity of a customized adjustable finger-cot (vaginal finger-cot device) with an embed strain gauge pressure transducer that allows to measured VSP in a time base. The finger-cot, developed by our research according to women’s health physiotherapists’ specifications, kept preserved the properties of vaginal palpation, minimizing the measurement artifacts inherent to intravaginal probe.


Urinary incontinence Vaginal assessment Pelvic floor muscles physiotherapy Vaginal palpation 


  1. 1.
    Bump RC, Norton PA (1998) Epidemiology and natural history of pelvic floor dysfunction. Obstet Gynecol Clin North Am 25(4):723–746CrossRefGoogle Scholar
  2. 2.
    Di Benedetto P (2004) Female urinary incontinence rehabilitation. Minerva Ginecol 56(4):353–369Google Scholar
  3. 3.
    Bo K, Herbert RD (2013) There is not yet strong evidence that exercise regimens other than pelvic floor muscle training can reduce stress urinary incontinence in women: a systematic review. J Physiother 59(3):159–168. CrossRefGoogle Scholar
  4. 4.
    Bø K (2004) Urinary incontinence, pelvic floor dysfunction, exercise and sport. Sports Med 34(7):451–464CrossRefGoogle Scholar
  5. 5.
    Bø K (2003) Pelvic floor muscle strength and response to pelvic floor muscle training for stress urinary incontinence. Neurourol Urodyn 22(7):654–658. CrossRefGoogle Scholar
  6. 6.
    Bø K (2004) Pelvic floor muscle training is effective in treatment of female stress urinary incontinence, but how does it work? Int Urogynecol J Pelvic Floor Dysfunct 15(2):76–84CrossRefGoogle Scholar
  7. 7.
    Kegel AH (1948) Progressive resistance exercise in the functional restoration of the perineal muscles. Am J Obstet Gynecol 56(2):238–248CrossRefGoogle Scholar
  8. 8.
    Bø K, Sherburn M, Allen T (2003) Transabdominal ultrasound measurement of pelvic floor muscle activity when activated directly or via a transversus abdominis muscle contraction. Neurourol Urodyn 22(6):582–588CrossRefGoogle Scholar
  9. 9.
    Bø K (2006) Can pelvic floor muscle training prevent and treat pelvic organ prolapse? Acta Obstet Gynecol Scand 85(3):263–268CrossRefGoogle Scholar
  10. 10.
    Bø K, Sherburn M (2005) Evaluation of female pelvic-floor muscle function and strength. Phys Ther 85(3):269–282Google Scholar
  11. 11.
    Ashton-Miller JA, Zielinski R, Miller JM et al (2014) Validity and reliability of an instrumented speculum designed to minimize the effect of intra-abdominal pressure on the measurement of pelvic floor muscle strength. Clin Biomech 29(10):1146–1150. CrossRefGoogle Scholar
  12. 12.
    Guaderrama NM, Nager CW, Liu J et al (2005) The vaginal pressure profile. Neurourol Urodyn 24(3):243–247CrossRefGoogle Scholar
  13. 13.
    Bø K, Finckenhagen HB (2001) Vaginal palpation of pelvic floor muscle strength: inter-test reproducibility and comparison between palpation and vaginal squeeze pressure. Acta Obstet Gynecol Scand 80(10):883–887CrossRefGoogle Scholar
  14. 14.
    Brink CA, Sampselle CM, Wells TJ et al (1989) A Digital test for pelvic muscle strength in older women with urinary incontinence. Nurs Res 38(4):196–199CrossRefGoogle Scholar
  15. 15.
    Laycock J, Jerwood D (2001) Pelvic floor muscle assessment: the PERFECT scheme. Physiotherapy 87(12):631–642. CrossRefGoogle Scholar
  16. 16.
    Frawley HC, Galea MP, Phillips BA et al (2006) Reliability of pelvic floor muscle strength assessment using different test positions and tools. Neurourol Urodyn 25(3):236–242CrossRefGoogle Scholar
  17. 17.
    Altman DG (2000) Statistics in medical journals: some recent trends. Stat Med 19(23):3275–3289CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Augusto Gil Pascoal
    • 1
    Email author
  • Patrícia Silva
    • 2
  • Fátima Sancho
    • 3
  1. 1.CIPER—LBMF, Faculty of Human KineticsUniversity of LisbonLisbonPortugal
  2. 2.ESTeS Lisboa, Polytechnic Institute of LisbonLisbonPortugal
  3. 3.The Alcoitão School of HealthAlcabidechePortugal

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