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The effect of visually manipulating back size and morphology on back perception, body ownership, and attitudes towards self-capacity during a lifting task

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Themelis, Kristy, Ratcliffe, Natasha, Nishigami, Tomohiko, Wand, Benedict M., Newport, Roger and Stanton, Tasha R. (2021) The effect of visually manipulating back size and morphology on back perception, body ownership, and attitudes towards self-capacity during a lifting task. Psychological Research . doi:10.1007/s00426-021-01609-z (In Press)

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Official URL: https://doi.org/10.1007/s00426-021-01609-z

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Abstract

Body re-sizing illusions can profoundly alter perception of our own body. We investigated whether creating the illusion of a muscled and fit-looking back (Strong) influenced perceived back size, body ownership, and attitudes towards self-capacity during a lifting task. Twenty-four healthy male volunteers performed a standardised lifting task while viewing real-time (delay < 20 ms) video of their own back through a head-mounted display under four different conditions (Normal size, Strong, Reshaped, Large; order randomised). The MIRAGE-mediated reality system was used to modify the shape, size, and morphology of the back. Participants were poor at recognizing the correct appearance of their back, for both implicit (perceived width of shoulders and hips) and explicit (questionnaire) measures of back size. Visual distortions of body shape (Reshaped condition) altered implicit back size measures. However, viewing a muscled back (Strong condition) did not result in a sense of agency or ownership and did not update implicit perception of the back. No conditions improved perceptions/attitudes of self-capacity (perceived back strength, perceived lifting confidence, and perceived back fitness). The results lend support for the importance of the embodiment of bodily changes to induce changes in perception. Further work is warranted to determine whether increased exposure to illusory changes would alter perceptions and attitudes towards self-capacity or whether different mechanisms are involved. [Abstract copyright: © 2021. The Author(s).]

Item Type: Journal Article
Subjects: B Philosophy. Psychology. Religion > BF Psychology
G Geography. Anthropology. Recreation > GV Recreation Leisure
H Social Sciences > HM Sociology
Q Science > QM Human anatomy
Divisions: Faculty of Science > Psychology
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Back -- Psychological aspects, Back exercises, Body size , Back -- Size -- Psychological aspects, Stature , Physical-appearance-based bias , Body image, Self-perception, Weight lifting
Journal or Publication Title: Psychological Research
Publisher: Springer
ISSN: 0340-0727
Official Date: 2 November 2021
Dates:
DateEvent
2 November 2021Published
6 October 2021Accepted
DOI: 10.1007/s00426-021-01609-z
Status: Peer Reviewed
Publication Status: In Press
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
110216Pain Relief Foundationhttp://dx.doi.org/10.13039/501100000323
203/12BIALhttps://www.bial.com/com/bial-foundation/
ID1141735Australian National Preventive Health Agencyhttp://dx.doi.org/10.13039/100008706
ID1141735National Health and Medical Research Council Career Development AwardUNSPECIFIED

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