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Article

Validity and Test-Retest Reliability of a Novel Push Low-Cost Hand-Held Dynamometer for Knee Strength Assessment during Different Force Ranges

1
Musculoskeletal Research Group—NIME, Department of Physical Therapy, Federal University of Juiz de Fora, Juiz de Fora 36036-900, Brazil
2
Department of Physical Education, Federal University of Juiz de Fora, Juiz de Fora 36036-900, Brazil
3
Department of Physical Therapy, Universidad del Gran Rosario, Rosario C1021AAH, Argentina
*
Author to whom correspondence should be addressed.
Academic Editor: Paolo Aseni
Diagnostics 2022, 12(1), 186; https://doi.org/10.3390/diagnostics12010186
Received: 20 December 2021 / Revised: 4 January 2022 / Accepted: 11 January 2022 / Published: 13 January 2022
(This article belongs to the Section Pathology and Molecular Diagnostics)
The objective was to assess the instrumental validity and the test–retest reliability of a low-cost hand-held push dynamometer adapted from a load-cell based hanging scale (tHHD) to collect compressive forces in different ranges of compressive forces. Three independent raters applied 50 pre-established compressions each on the tHHD centered on a force platform in three distinct ranges: ~70 N, ~160 N, ~250 N. Knee isometric strength was also assessed on 19 subjects in two sessions (48 h apart) using the tHHD anchored by an inelastic adjustable strap. Knee extension and flexion were assessed with the participant seated on a chair with the feet resting on the floor, knees, and hips flexed at 90°. The isometric force peaks were recorded and compared. The ICC and the Cronbach’s α showed excellent consistency and agreement for both instrumental validity and test–retest reliability (range: 0.89–0.99), as the correlation and determination coefficients (range: 0.80–0.99). The SEM and the MDC analysis returned adequate low values with a coefficient of variation less than 5%. The Bland–Altman results showed consistency and high levels of agreement. The tHHD is a valid method to assess the knee isometric strength, showing portability, cost-effectiveness, and user-friendly interface to provide an effective form to assess the knee isometric strength. View Full-Text
Keywords: muscle strength; knee assessment; isometric contraction muscle strength; knee assessment; isometric contraction
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Figure 1

  • Externally hosted supplementary file 1
    Doi: 10.17632/8bj9kbkf9b.1
    Link: https://data.mendeley.com/datasets/8bj9kbkf9b/1
    Description: Raw data obtained from force platform versus push hand held dynamometer (for validity analysis). Raw data obtained from 25 subjects (day 1 versus day 2 for reliability analysis).
MDPI and ACS Style

Macedo, M.d.C.; Souza, M.A.; Ferreira, K.R.; Campos, L.O.; Souza, I.S.O.; Barbosa, M.A.; Brito, C.J.; Intelangelo, L.; Barbosa, A.C. Validity and Test-Retest Reliability of a Novel Push Low-Cost Hand-Held Dynamometer for Knee Strength Assessment during Different Force Ranges. Diagnostics 2022, 12, 186. https://doi.org/10.3390/diagnostics12010186

AMA Style

Macedo MdC, Souza MA, Ferreira KR, Campos LO, Souza ISO, Barbosa MA, Brito CJ, Intelangelo L, Barbosa AC. Validity and Test-Retest Reliability of a Novel Push Low-Cost Hand-Held Dynamometer for Knee Strength Assessment during Different Force Ranges. Diagnostics. 2022; 12(1):186. https://doi.org/10.3390/diagnostics12010186

Chicago/Turabian Style

Macedo, Maria de Cássia, Matheus Almeida Souza, Kariny Realino Ferreira, Laura Oliveira Campos, Igor Sérgio Oliveira Souza, Michelle Almeida Barbosa, Ciro José Brito, Leonardo Intelangelo, and Alexandre Carvalho Barbosa. 2022. "Validity and Test-Retest Reliability of a Novel Push Low-Cost Hand-Held Dynamometer for Knee Strength Assessment during Different Force Ranges" Diagnostics 12, no. 1: 186. https://doi.org/10.3390/diagnostics12010186

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