Reliability and validity of pelvic floor muscle strength assessment using the MizCure perineometer
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Reliability and validity of pelvic floor muscle strength assessment using the MizCure perineometer Yui Abe‑Takahashi1,2, Takeya Kitta1*, Mifuka Ouchi1,3, Minori Okayauchi4, Hiroki Chiba1, Madoka Higuchi1, Mio Togo1 and Nobuo Shinohara1
Abstract Background: The purpose of this study was to clarify the reliability and validity of pelvic floor muscle (PFM) strength assessment using the MizCure perineometer in healthy women. Methods: Twenty healthy women (age 20–45 years) participated in this study. The vaginal pressure measured using the MizCure and validated Peritron perineometers were repeated during PFM contraction in the supine and standing positions. All women were evaluated twice by examiners 1 and 2. Following the measurements in the first session (Test 1), they were repeated after an interval of between 2 and 6 weeks (Test 2). Within- and between-session intraand inter-rater reliabilities in vaginal pressure were analyzed using intraclass correlation coefficients (ICC) (1, 1) and (2, 1), respectively. Validity was assessed by Pearson’s product-moment correlation coefficient and Spearman’s rank correlation analysis. Results: Within-session intra-rater reliabilities for both examiners 1 and 2 for all vaginal pressures in Tests 1 and 2 were 0.90–0.96 for both perineometers. Between-session intra-rater reliability for the MizCure was 0.72–0.79 for both positions for examiner 1, and 0.63 in the supine position and 0.80 in the standing position for examiner 2. Inter-rater reliability for Test 1 was 0.91 in the supine position and 0.87 in the standing position for the MizCure. The vaginal pres‑ sures using the MizCure and Peritron were significantly associated with the supine position (r = 0.68, P
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