Construct, reliability and reproducibility of an ICF-based pelvic floor muscle strength scale

Abstract

Background: The functional evaluation of the pelvic floor muscles (PFM) is a fundamental part of the algorithm for establishing the kinesiological-functional diagnosis, without which the eligibility of the most appropriate techniques for the treatment of dysfunctions related to the pelvic floor is nothing more than trial-and-error. However, there is no consensus in the literature regarding strength scales. Aims: to validate a digital strength scale for the pelvic floor muscles based on the International Classification of Disability, Functioning and Health (ICF). Method: a digital pressure scale, based on the five degrees of function/dysfunction of the ICF, was constructed and validated by a digital pressure dynamometer specially built for this purpose. The digital manual closing force data of dorsalis interosseous muscles (medium and indicator fingers) of 210 pelvic physiotherapists were collected and studied. Results: Construct: It was possible to construct a 5-degree strength scale for PFM. Face: all volunteers understood the scale and considered it easy to apply. Reliability and Reproducibility: The force of the 210 was always between 800 kfg and 1000 kgf, showing high reliability and reproducibility. Conclusion: the new scale for measuring and recording PFM strength based on the ICF showed high reliability and reproducibility and could be used for this purpose.