The nocebo effect in motor performance consists in a reduction of force and increase of fatigue following the application of an inert treatment that the recipient believes to be effective. This effect is variable across individuals and it is usually stronger if conditioning -exposure to the active effect of the treatment- precedes a test session, in which the treatment is inert. In the current explorative study we used a conditioning procedure to investigate whether subjective perception of treatment effectiveness changes between the conditioning and the test session and whether this change is related to dispositional traits and to the nocebo-induced reduction of force. Results showed that 56.1% of participants perceived the treatment as more effective in the test than in the conditioning session, had a more pronounced reduction of force, felt more effort and sense of weakness and were characterized by lower levels of optimism and higher anxiety traits compared to the other 43.9% of participants, who conversely perceived the treatment as less effective in the test session than in the conditioning. These findings highlight for the first time a link between changes in perception of treatment effectiveness, personality traits and the magnitude of the nocebo response in motor performance.

Changes in perception of treatment efficacy are associated to the magnitude of the nocebo effect and to personality traits

CORSI, Nicole;EMADI ANDANI, Mehran;TINAZZI, Michele;FIORIO, Mirta
2016

Abstract

The nocebo effect in motor performance consists in a reduction of force and increase of fatigue following the application of an inert treatment that the recipient believes to be effective. This effect is variable across individuals and it is usually stronger if conditioning -exposure to the active effect of the treatment- precedes a test session, in which the treatment is inert. In the current explorative study we used a conditioning procedure to investigate whether subjective perception of treatment effectiveness changes between the conditioning and the test session and whether this change is related to dispositional traits and to the nocebo-induced reduction of force. Results showed that 56.1% of participants perceived the treatment as more effective in the test than in the conditioning session, had a more pronounced reduction of force, felt more effort and sense of weakness and were characterized by lower levels of optimism and higher anxiety traits compared to the other 43.9% of participants, who conversely perceived the treatment as less effective in the test session than in the conditioning. These findings highlight for the first time a link between changes in perception of treatment effectiveness, personality traits and the magnitude of the nocebo response in motor performance.
motor performance; nocebo effect; conditioning; perception; personality
File in questo prodotto:
File Dimensione Formato  
srep30671.pdf

accesso aperto

Descrizione: CC4.0 publisher's version
Tipologia: Versione dell'editore
Licenza: Creative commons
Dimensione 1.21 MB
Formato Adobe PDF
1.21 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/948415
Citazioni
  • ???jsp.display-item.citation.pmc??? 8
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 20
social impact