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  • Reliability of hip muscle strength measured in principal and intermediate planes of movement

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    Goncalves498008-Published.pdf (8.753Mb)
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    Author(s)
    Goncalves, Basilio AM
    Saxby, David J
    Kositsky, Adam
    Barrett, Rod S
    Diamond, Laura E
    Griffith University Author(s)
    Barrett, Rod
    Saxby, David J.
    Diamond, Laura
    Year published
    2021
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    Abstract
    Background. Muscle strength testing is widely used in clinical and athletic populations. Commercially available dynamometers are designed to assess strength in three principal planes (sagittal, transverse, frontal). However, the anatomy of the hip suggests muscles may only be recruited submaximally during tasks performed in these principal planes. Objective. To evaluate the inter-session reliability of maximal isometric hip strength in the principal planes and three intermediate planes. Methods. Twenty participants (26.1 ± 2.7 years, 50% female) attended two testing sessions 6.2 ± 1.8 days apart. Participants completed 3-5 ...
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    Background. Muscle strength testing is widely used in clinical and athletic populations. Commercially available dynamometers are designed to assess strength in three principal planes (sagittal, transverse, frontal). However, the anatomy of the hip suggests muscles may only be recruited submaximally during tasks performed in these principal planes. Objective. To evaluate the inter-session reliability of maximal isometric hip strength in the principal planes and three intermediate planes. Methods. Twenty participants (26.1 ± 2.7 years, 50% female) attended two testing sessions 6.2 ± 1.8 days apart. Participants completed 3-5 maximal voluntary isometric contractions for hip abduction, adduction, flexion, extension, and internal and external rotation measured using a fixed uniaxial load cell (custom rig) and commercial dynamometer (Biodex). Three intermediate hip actions were also tested using the custom rig: Extension with abduction, extension with external rotation, and extension with both abduction and external rotation. Results. Moderate-to-excellent intraclass correlation coefficients were observed for all principal and intermediate muscle actions using the custom rig (0.72-0.95) and the Biodex (0.85-0.95). The minimum detectable change was also similar between devices (custom rig D 11-31%; Biodex = 9-20%). Bland-Altman analysis revealed poor agreement between devices (range between upper and lower limits of agreement = 77-131%). Conclusions. Although the custom rig and Biodex showed similar reliability, both devices may lack the sensitivity to detect small changes in hip strength commonly observed following intervention.
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    Journal Title
    PeerJ
    Volume
    9
    DOI
    https://doi.org/10.7717/peerj.11521
    Copyright Statement
    © 2021 Goncalves et al. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Subject
    Biological sciences
    Biomedical and clinical sciences
    Science & Technology
    Multidisciplinary Sciences
    Science & Technology - Other Topics
    Muscle function
    Dynamometer
    Publication URI
    http://hdl.handle.net/10072/411639
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    • Journal articles

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