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  • Distorted distance perception to reachable points in people with chronic shoulder pain

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    Embargoed until: 2021-07-01
    Author(s)
    Alaiti, Rafael K
    Harvie, Daniel S
    Gasparin, Juliana T
    de Sousa, Marcello F
    Pompeu, Jose E
    Madden, Victoria J
    Leite Hunziker, Maria Helena
    da Costa, Marcelo F
    Griffith University Author(s)
    Harvie, Daniel S.
    Year published
    2019
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    Abstract
    Perception is not simply a carbon copy of the real world, but is subject to distortions that may reflect protective drive. This study aimed to investigate whether people with chronic shoulder pain show perceptual distortions of space and body that may promote protective behavior. Eighty-four people with shoulder pain and 51 healthy controls participated. Participants estimated (1) distances to points on a cork-board within and outside reaching distance, and (2) the perceived length of their own arms. A novel measure of movement-related pain was also used to determine whether movement-related pain relates to perceptual ...
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    Perception is not simply a carbon copy of the real world, but is subject to distortions that may reflect protective drive. This study aimed to investigate whether people with chronic shoulder pain show perceptual distortions of space and body that may promote protective behavior. Eighty-four people with shoulder pain and 51 healthy controls participated. Participants estimated (1) distances to points on a cork-board within and outside reaching distance, and (2) the perceived length of their own arms. A novel measure of movement-related pain was also used to determine whether movement-related pain relates to perceptual distortion. Overall, distance and arm length estimates did not differ between groups, nor did participants perceive their arms to be of different length. However, a moderate correlation between movement-related pain and the index of distance perception was found within the pain group, specifically for distance estimates to points within reach. Our results suggest that distorted perception is not a typical consequence of chronic shoulder pain; however, that it may occur in cases where pain is strongly linked to movement. Our findings have implications for understanding avoidance of movement in people with persistent pain.
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    Journal Title
    Musculoskeletal Science and Practice
    Volume
    42
    DOI
    https://doi.org/10.1016/j.msksp.2019.04.015
    Copyright Statement
    © 2019 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Body image
    Chronic pain
    Pain
    Perceptual distortion
    Perceptual inference
    Publication URI
    http://hdl.handle.net/10072/386734
    Collection
    • Journal articles

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