Development and reliability of a new system for bedside evaluation of non-volitional knee extension force.

Autor: Vaz MA; School of Physical Education, Physical Therapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. Electronic address: marco.vaz@ufrgs.br., Fröhlich M; School of Physical Education, Physical Therapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil., Júnior DPDS; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil., Schildt A; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil., Thomé PRO; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil., Muller AF; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil., Tondin BR; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil., Sbruzzi G; School of Physical Education, Physical Therapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil., Maffiuletti NA; Human Performance Lab, Schulthess Clinic, Zurich, Switzerland., Sanches PRS; Biomedical Engineering Research and Development Service of the Porto Alegre's Clinical Hospital, Porto Alegre, RS, Brazil.
Jazyk: angličtina
Zdroj: Medical engineering & physics [Med Eng Phys] 2021 Dec; Vol. 98, pp. 28-35. Date of Electronic Publication: 2021 Oct 14.
DOI: 10.1016/j.medengphy.2021.10.007
Abstrakt: Purpose: Neuromuscular electrical stimulation (NMES) is a widely-used technique for diagnostic and therapeutic purposes. Here we developed and tested the reliability of a new NMES-dynamometer system for bedside evaluation of knee extensor muscle function.
Materials and Methods: Thirty-two healthy participants (16 men, 16 women; 27±5 years) completed two testing sessions, 7 days apart. On day 1, a single experienced rater, who repeated the evaluation on day 2 with two other raters, completed a standardized testing procedure. Participants were placed supine, with knees flexed and legs connected to the dynamometer. Maximal voluntary knee extensor isometric force (MVF) and supramaximal twitch force (TwF) were obtained.
Results: High intra-rater intraclass correlation coefficients were observed for both MVF (0.91) and TwF (0.94). MVF and TwF standard error of measurements (8.2%, 5.9%) and minimal detectable changes (16%, 11.6%) were low compared to mean values. High intraclass correlation coefficients were also observed for inter-rater comparisons of MVF (0.89) and TwF (0.86). Standard errors of measurements (MVF: 8.7%, TwF: 5.5%) and minimal detectable changes (MVF: 17.2%, TwF: 10.8%) were similar to intra-rater comparisons.
Conclusion: The good reliability of the novel NMES-dynamometer system suggests it as an appropriate tool for the bedside evaluation of knee extensor muscle function.
(Copyright © 2021 IPEM. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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