Validation of a New Placebo Interferential Current Method: A New Placebo Method of Electrostimulation.

Autor:	Mendonça Araújo F; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil.; Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Alves Menezes M; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Martins de Araújo A; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Abner Dos Santos Sousa T; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil.; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Vasconcelos Lima L; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil.; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Ádan Nunes Carvalho E; Departamento de Engenharia Elétrica, Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Sergipe, Aracaju, Se, Brazil., Melo DeSantana J; Departamento de Fisioterapia, Universidade Federal de Sergipe, Aracaju, Se, Brazil.; Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Federal de Sergipe, Aracaju, Se, Brazil.; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de Sergipe, Aracaju, Se, Brazil.
Jazyk:	angličtina
Zdroj:	Pain medicine (Malden, Mass.) [Pain Med] 2017 Jan 01; Vol. 18 (1), pp. 86-94.
DOI:	10.1093/pm/pnw039
Abstrakt:	Objective: The present study aimed to investigate if a new placebo device for interferential current (IFC) that delivers current during only the first 40 seconds of stimulation is effective at promoting adequate subject blinding. Methods: Seventy-five subjects were recruited and enrolled into three groups: active IFC, inactive placebo, and new placebo. Pressure pain threshold (PPT), cutaneous sensory threshold (CST), and pain intensity were measured before and after the intervention. After the final assessment, the subjects and the investigator who applied the current were asked about the type of stimulation administered. Results: None of the placebo forms studied resulted in significant changes to PPT, CST, or pain intensity. The subjects stimulated with active IFC at high intensities (> 17 mA) of stimulation showed higher PPT and CST and lower pain intensity than subjects stimulated at low intensities ( p < 0.03). The new placebo method blinded the investigator in 100% of cases of IFC and 60% of subjects stimulated, whereas for inactive placebo, the investigator was blinded at a rate of 0% and 34% of subjects. Conclusion: The new method of placebo IFC was effective for blinding of research investigators and most of the active IFC-treated subjects, promoting an appropriate placebo method. (© 2016 American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com)
Databáze:	MEDLINE
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