Volume 26, Issue 2 (Summer-In Press 2025)
jrehab 2025, 26(2): 0-0 |
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Gnat R, Gogola A, Polaczek A, Woźniak P, Wolny T. The Reliability of the Knee Joint Flexors and Extensors Muscles Length Tests Modified to Meet Requirements of Scientific Research. jrehab 2025; 26 (2)
URL: http://rehabilitationj.uswr.ac.ir/article-1-3570-en.html
URL: http://rehabilitationj.uswr.ac.ir/article-1-3570-en.html
1- Institute of Physiotherapy and Health Sciences, Motion Analysis Laboratory, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland.
2- Institute of Physiotherapy and Health Sciences, Motion Analysis Laboratory, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland. ,a.polaczek11@gmail.com
3- Dream Motion Medical Group, Libiąż, Poland.
2- Institute of Physiotherapy and Health Sciences, Motion Analysis Laboratory, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland. ,
3- Dream Motion Medical Group, Libiąż, Poland.
Abstract: (108 Views)
Background: This study aimed to evaluate the intra- and inter-rater reliability of modified versions of the widely used clinical tests for assessing knee flexor and knee extensor muscle length. These tests are fundamental components of postural assessments in children and adolescents, helping to identify postural abnormalities and inform appropriate treatment or preventative strategies. The findings will determine the feasibility of using these modified versions in scientific research.
Material and methods: Seventy-six children (37 girls) with mean age of 13.24 years were included. The measurements were taken by the two evaluators on the same day, as well as with the breaks lasting two and five days. Indices of reliability were calculated: intraclass correlation coefficients (ICC), standard errors of measurement, smallest detectable differences.
Results: The outcomes of both muscle length tests demonstrated good to excellent reliability, regardless of whether the measurements were conducted by the same evaluator after 2 or 5 days, or by different evaluators on the same day and after similar intervals. The lowest calculated ICC of 0.79 was the one for the knee flexors length test on the left side of the body. In all remaining cases ICCs higher than 0.80 were obtained.
Conclusion: After specific modifications, there is a possibility of obtaining high level of reliability of the two addressed muscle length tests which justifies utilisation of the modified versions in scientific settings.
Material and methods: Seventy-six children (37 girls) with mean age of 13.24 years were included. The measurements were taken by the two evaluators on the same day, as well as with the breaks lasting two and five days. Indices of reliability were calculated: intraclass correlation coefficients (ICC), standard errors of measurement, smallest detectable differences.
Results: The outcomes of both muscle length tests demonstrated good to excellent reliability, regardless of whether the measurements were conducted by the same evaluator after 2 or 5 days, or by different evaluators on the same day and after similar intervals. The lowest calculated ICC of 0.79 was the one for the knee flexors length test on the left side of the body. In all remaining cases ICCs higher than 0.80 were obtained.
Conclusion: After specific modifications, there is a possibility of obtaining high level of reliability of the two addressed muscle length tests which justifies utilisation of the modified versions in scientific settings.
Type of Study: Original |
Subject:
Physical Therapy
Received: 20/11/2024 | Accepted: 14/04/2025 | Published: 13/10/2025
Received: 20/11/2024 | Accepted: 14/04/2025 | Published: 13/10/2025
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This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-By-NC), which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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