Cargando…
Do placebo expectations influence perceived exertion during physical exercise?
This study investigates the role of placebo expectations in individuals’ perception of exertion during acute physical exercise. Building upon findings from placebo and marketing research, we examined how perceived exertion is affected by expectations regarding a) the effects of exercise and b) the e...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5491246/ https://www.ncbi.nlm.nih.gov/pubmed/28662168 http://dx.doi.org/10.1371/journal.pone.0180434 |
_version_ | 1783247109466619904 |
---|---|
author | Mothes, Hendrik Leukel, Christian Seelig, Harald Fuchs, Reinhard |
author_facet | Mothes, Hendrik Leukel, Christian Seelig, Harald Fuchs, Reinhard |
author_sort | Mothes, Hendrik |
collection | PubMed |
description | This study investigates the role of placebo expectations in individuals’ perception of exertion during acute physical exercise. Building upon findings from placebo and marketing research, we examined how perceived exertion is affected by expectations regarding a) the effects of exercise and b) the effects of the exercise product worn during the exercise. We also investigated whether these effects are moderated by physical self-concept. Seventy-eight participants conducted a moderate 30 min cycling exercise on an ergometer, with perceived exertion (RPE) measured every 5 minutes. Beforehand, each participant was randomly assigned to 1 of 4 conditions and watched a corresponding film clip presenting “scientific evidence” that the exercise would or would not result in health benefits and that the exercise product they were wearing (compression garment) would additionally enhance exercise benefits or would only be worn for control purposes. Participants’ physical self-concept was assessed via questionnaire. Results partially demonstrated that participants with more positive expectations experienced reduced perceived exertion during the exercise. Furthermore, our results indicate a moderator effect of physical self-concept: Individuals with a high physical self-concept benefited (in terms of reduced perceived exertion levels) in particular from an induction of generally positive expectations. In contrast, individuals with a low physical self-concept benefited when positive expectations were related to the exercise product they were wearing. In sum, these results suggest that placebo expectations may be a further, previously neglected class of psychological factors that influence the perception of exertion. |
format | Online Article Text |
id | pubmed-5491246 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-54912462017-07-18 Do placebo expectations influence perceived exertion during physical exercise? Mothes, Hendrik Leukel, Christian Seelig, Harald Fuchs, Reinhard PLoS One Research Article This study investigates the role of placebo expectations in individuals’ perception of exertion during acute physical exercise. Building upon findings from placebo and marketing research, we examined how perceived exertion is affected by expectations regarding a) the effects of exercise and b) the effects of the exercise product worn during the exercise. We also investigated whether these effects are moderated by physical self-concept. Seventy-eight participants conducted a moderate 30 min cycling exercise on an ergometer, with perceived exertion (RPE) measured every 5 minutes. Beforehand, each participant was randomly assigned to 1 of 4 conditions and watched a corresponding film clip presenting “scientific evidence” that the exercise would or would not result in health benefits and that the exercise product they were wearing (compression garment) would additionally enhance exercise benefits or would only be worn for control purposes. Participants’ physical self-concept was assessed via questionnaire. Results partially demonstrated that participants with more positive expectations experienced reduced perceived exertion during the exercise. Furthermore, our results indicate a moderator effect of physical self-concept: Individuals with a high physical self-concept benefited (in terms of reduced perceived exertion levels) in particular from an induction of generally positive expectations. In contrast, individuals with a low physical self-concept benefited when positive expectations were related to the exercise product they were wearing. In sum, these results suggest that placebo expectations may be a further, previously neglected class of psychological factors that influence the perception of exertion. Public Library of Science 2017-06-29 /pmc/articles/PMC5491246/ /pubmed/28662168 http://dx.doi.org/10.1371/journal.pone.0180434 Text en © 2017 Mothes et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Mothes, Hendrik Leukel, Christian Seelig, Harald Fuchs, Reinhard Do placebo expectations influence perceived exertion during physical exercise? |
title | Do placebo expectations influence perceived exertion during physical exercise? |
title_full | Do placebo expectations influence perceived exertion during physical exercise? |
title_fullStr | Do placebo expectations influence perceived exertion during physical exercise? |
title_full_unstemmed | Do placebo expectations influence perceived exertion during physical exercise? |
title_short | Do placebo expectations influence perceived exertion during physical exercise? |
title_sort | do placebo expectations influence perceived exertion during physical exercise? |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5491246/ https://www.ncbi.nlm.nih.gov/pubmed/28662168 http://dx.doi.org/10.1371/journal.pone.0180434 |
work_keys_str_mv | AT motheshendrik doplaceboexpectationsinfluenceperceivedexertionduringphysicalexercise AT leukelchristian doplaceboexpectationsinfluenceperceivedexertionduringphysicalexercise AT seeligharald doplaceboexpectationsinfluenceperceivedexertionduringphysicalexercise AT fuchsreinhard doplaceboexpectationsinfluenceperceivedexertionduringphysicalexercise |