OBJECTIVES: to compare the immediate analgesic effects of 2 kHz or 4 kHz interferential current (IFC) with different amplitude-frequency modulations (AMFs) (2Hz or 100Hz) on chronic low back pain (CLBP). DESIGN: three-arm double-blinded randomized controlled trial SETTING: primary care. PARTICIPANTS: 175 patients (aged 19-60 years, 105 female) with CLBP. INTERVENTIONS: one session of IFC: GI2kHz/100Hz, GI2kHz/2Hz, GI4kHz/100Hz, GI4kHz/2Hz, or placebo (PG). MAIN OUTCOMES MEASURES: pain intensity by numerical rating scale of pain (NRS), McGill pain questionnaire (MPQ), and algometry. RESULTS: there was a significant difference in NRS (p<0.05) of GI2kHz/2Hz, GI4kHz/2Hz, and GI4kHz/100Hz groups, compared with that of PG and in MPQ of GI4kHz/2Hz and GI4kHz/100Hz groups, compared with that of PG. In algometry, only the GI4kHz/100Hz group showed a significant difference by two points in the lumbar region, compared with PG. Of the carrier frequencies, IFC of 4 kHz showed more effective results, although no significant difference was noted between the AMFs. CONCLUSION:IFC with a carrier frequency of 4 kHz and AMF of 100 Hz provides immediate analgesic effect in individuals with CLBP. This article is protected by copyright. All rights reserved.
RCT Entities:
OBJECTIVES: to compare the immediate analgesic effects of 2 kHz or 4 kHz interferential current (IFC) with different amplitude-frequency modulations (AMFs) (2Hz or 100Hz) on chronic low back pain (CLBP). DESIGN: three-arm double-blinded randomized controlled trial SETTING: primary care. PARTICIPANTS: 175 patients (aged 19-60 years, 105 female) with CLBP. INTERVENTIONS: one session of IFC: GI2kHz/100Hz, GI2kHz/2Hz, GI4kHz/100Hz, GI4kHz/2Hz, or placebo (PG). MAIN OUTCOMES MEASURES: pain intensity by numerical rating scale of pain (NRS), McGill pain questionnaire (MPQ), and algometry. RESULTS: there was a significant difference in NRS (p<0.05) of GI2kHz/2Hz, GI4kHz/2Hz, and GI4kHz/100Hz groups, compared with that of PG and in MPQ of GI4kHz/2Hz and GI4kHz/100Hz groups, compared with that of PG. In algometry, only the GI4kHz/100Hz group showed a significant difference by two points in the lumbar region, compared with PG. Of the carrier frequencies, IFC of 4 kHz showed more effective results, although no significant difference was noted between the AMFs. CONCLUSION: IFC with a carrier frequency of 4 kHz and AMF of 100 Hz provides immediate analgesic effect in individuals with CLBP. This article is protected by copyright. All rights reserved.
Entities:
Keywords:
Low Back Pain; Pain Measurement; Transcutaneous Electric Nerve Stimulation
Authors: Madeline Luiza Ferreira Pivovarsky; Fernanda Gaideski; Rafael Michel de Macedo; Raciele Ivandra Guarda Korelo; Luiz César Guarita-Souza; Richard Eloin Liebano; Ana Carolina Brandt de Macedo Journal: Einstein (Sao Paulo) Date: 2021-12-17
Authors: Blanca De-la-Cruz-Torres; Eva Martínez-Jiménez; Emmanuel Navarro-Flores; Patricia Palomo-López; Vanesa Abuín-Porras; Raquel Díaz-Meco-Conde; Daniel López-López; Carlos Romero-Morales Journal: Int J Environ Res Public Health Date: 2021-03-25 Impact factor: 3.390