Reliability of different electromyographic normalization methods for pelvic floor muscles assessment.

Autor: Pereira-Baldon VS; Physical Therapy Department, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil.; Physical Therapy Department, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil., de Oliveira AB; Physical Therapy Department, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil., Padilha JF; Physical Therapy Department, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil., Degani AM; Department of Physical Therapy, Kalamazoo, Michigan, United States., Avila MA; Physical Therapy Department, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil., Driusso P; Physical Therapy Department, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: Neurourology and urodynamics [Neurourol Urodyn] 2020 Apr; Vol. 39 (4), pp. 1145-1151. Date of Electronic Publication: 2020 Mar 02.
DOI: 10.1002/nau.24332
Abstrakt: Aims: To evaluate the reliability of different methods to normalize pelvic floor muscles (PFM) electromyography (EMG).
Methods: Thirty nulliparous women (23.9 ± 3.2 years), free from PFM dysfunction, completed two test sessions 7 days apart. For EMG normalization, signals were acquired during four different tasks using a vaginal probe in situ: PFM maximal voluntary contraction (MVC) and three daily activities with increased intra-abdominal pressure (coughing, Valsalva maneuver, and abdominal contraction). The intraclass correlation coefficients (ICC), standard error of measurement (SEM), relative standard error of measurement (%SEM), and minimal detectable change (MDC) were calculated for each variable.
Results: ICC values for test-retest reliability of normalization methods ranged from 0.61 to 0.95. The highest values were obtained for mean root mean square (RMS) of the abdominal contraction and peak RMS of PFM-MVC. Normalization using RMS of PFM-MVC showed the lowest values of SEM and MDC.
Conclusions: The normalization of EMG data is considered a fundamental part of EMG investigations. These findings suggest that the normalization of PFM-EMG by either peak RMS of PFM-MVC or mean and peak RMS of abdominal contraction has excellent reliability and it can be applied in studies involving the evaluation of young women.
(© 2020 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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