title: Oxford Grading Scale vs manometer for assessment of pelvic floor strength in nulliparous sports students.
abstract: OBJECTIVE
  To compare pelvic floor muscle strength in nulliparous sports students measured using the modified Oxford Grading Scale and a Peritron manometer; and to compare the manometric measurements between continent and incontinent subjects.
  
  
  METHODS
  Cross-sectional study. All subjects were evaluated twice on the same day; first by vaginal digital examination and subsequently by vaginal pressure using a Peritron manometer.
  
  
  METHODS
  Forty-three nulliparous female sports students [mean age 21 (standard deviation 4) years] from the Sports Faculty of the University of Porto.
  
  
  RESULTS
  This study found a significant moderate correlation between the Oxford Grading Scale score and peak pressure on manometry (r=0.646, P=0.002). Mean maximal strength for the entire group was 70.4cmH2O (range 21 to 115cmH2O). Out of 43 subjects, 37% (n=16) demonstrated signs of incontinence. On manometry, no significant differences were found in vaginal resting pressure or peak pressure between the continent and incontinent groups.
  
  
  CONCLUSIONS
  There was moderate correlation between peak pressure on manometry and the Oxford Grading Scale score. Peritron manometer measurements of pelvic floor muscle contractions showed no significant differences in vaginal resting pressure and peak pressure in continent and incontinent subjects.
authors.affiliation: IDMEC, Faculty of Engineering, University of Porto, Porto, Portugal.
authors.forename: T
authors.initials: T
authors.lastname: Da Roza
authors.forename: T
authors.initials: T
authors.lastname: Mascarenhas
authors.forename: M
authors.initials: M
authors.lastname: Araujo
authors.forename: V
authors.initials: V
authors.lastname: Trindade
authors.forename: R Natal
authors.initials: RN
authors.lastname: Jorge
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008365:Manometry; D053580:Muscle Strength / Q000502:physiology*; D010298:Parity; D017773:Pelvic Floor / Q000502:physiology*; D011247:Pregnancy; D011312:Pressure; D015995:Prevalence; D013177:Sports; D013334:Students / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D014549:Urinary Incontinence / Q000453:epidemiology* / Q000503:physiopathology*; D014621:Vagina / Q000502:physiology; D055815:Young Adult