einstein (São Paulo). 23/jul/2025;23:eAO0222.

Immediate effects of Aussie Current on chronic low back pain: a randomized controlled trial

Leticia

Bobato

, Gabriele

Bressan

, Lucas Vinicius

Dias

, Ramon Schmidt

Sale

, Audrin Said

Vojciechowski

, Luiza Helena

Gonçalves

, Ana Carolina Brandt de

Macedo

DOI: 10.31744/einstein_journal/2025AO0222

Highlights

■ Aussie Current decreases immediate pain intensity.
■ Both carrier frequencies of Aussie Current were efficient in decreasing pain.
■ There are no ideal parameters for using the Aussie Current to relieve pain in individuals with chronic lower back pain.

ABSTRACT

Objective:

To analyze the immediate analgesic effects of Aussie Current on chronic low back pain using different parameters.

Methods:

A total of 105 patients (aged 18-80 years, of both sexes, with chronic low back pain) were randomized into five groups: AG1kHz/100Hz, AG1kHz/2Hz, AG4kHz/100Hz, AG4kHz/2Hz, and placebo. All participants underwent a single application of the Aussie Current for 30 min. The assessments were conducted before and immediately after the intervention, with the following outcomes: pain intensity using the numerical pain rating scale, McGill Pain Questionnaire, mechanical pain threshold, and five-times-sit-to-stand test before and immediately after the intervention. The Start-Back Questionnaire was administered before the intervention to analyze the physical and psychosocial factors related to chronic lower back pain.

Results:

In the intragroup analysis, all groups showed significant differences in the numerical pain rating scale and total McGill Pain Questionnaire index. For the mechanical pain threshold, a significant difference was observed in the AG1kHz/100Hz Group at three points in the lumbar region and in the five-times-sit-to-stand test at AG1kHz/100Hz, AG1kHz/2Hz, and AG4kHz/100Hz. In the intergroup comparison, there was a significant difference in the numerical pain rating scale scores between the AG1kHz/100Hz and AG1kHz/2Hz Groups in the Placebo Group.

Conclusion:

Aussie Current provides an immediate analgesic effect in individuals with chronic low back pain; however, there is no consensus on the ideal parameters.

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