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- Title
Validity and Test-Retest Reliability of a Novel Push Low-Cost Hand-Held Dynamometer for Knee Strength Assessment during Different Force Ranges.
- Authors
Macedo, Maria de Cássia; Souza, Matheus Almeida; Ferreira, Kariny Realino; Campos, Laura Oliveira; Souza, Igor Sérgio Oliveira; Barbosa, Michelle Almeida; Brito, Ciro José; Intelangelo, Leonardo; Barbosa, Alexandre Carvalho
- Abstract
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.
- Subjects
STATISTICAL reliability; KNEE; COMPRESSIVE force; DYNAMOMETER; MUSCLE contraction
- Publication
Diagnostics (2075-4418), 2022, Vol 12, Issue 1, p186
- ISSN
2075-4418
- Publication type
Article
- DOI
10.3390/diagnostics12010186