Effect of two suspension training programs on pain and musculoskeletal function in chronic low back pain: study protocol.

The aim of this study is to compare the effects of two suspension training (ST) protocols on pain and musculoskeletal function in women with chronic low back pain (CLBP). The study will be randomized, controlled, blinded clinical trial. Women aged 18-60 years who present CLBP will be selected. They will be randomized into three groups: STG1, which will carry out the program with difficulty progression in the exercises; STG2, in which the progression will be made by increasing the number of sets; and control group. STG1 and STG2 will perform the training two-times a week for 60 min for 12 weeks. It is expected that ST will effectively reduce pain and improve functionality in CLBP and that the best protocol will be verified. Clinical Trial Registration: RBR-10rv3fqt.

Low back pain is one of the most common symptoms encountered in everyday life. One of the indicated treatments is the practice of exercises; among them, we can mention the training that uses suspended tapes, called suspension training. The aim of this study is to compare the effects of two suspension training protocols on individuals with chronic low back pain. Methodology: women aged 18 to 60 years with low back pain for more than 12 weeks will be selected. Pre- and post-treatment pain level, trunk and leg motion range and flexibility, functional capacity, biopsychosocial factors, fears and beliefs, pain catastrophizing scale, trunk and leg muscle strength and endurance, depression and anxiety, self-perception and treatment satisfaction will be assessed. The training will take place twice a week, for 60 min, for 3 months. It is expected to verify pain reduction and functionality improvement in both groups and evaluate the best training protocol.

Immediate analgesic effect of interferential and Aussie currents in chronic low back pain: randomized clinical trial / Efeito analgésico imediato das correntes interferencial e Aussie na dor lombar crônica: ensaio clínico randomizado

ABSTRACT BACKGROUND AND OBJECTIVES: Despite the widespread use of mid-frequency currents in reducing pain in chronic low back pain (CLBP), there is still no consensus on the optimal parameters for treatment. The aim of this study was to compare the immediate analgesic effects of interferential (IC) and Aussie (AC) currents in CLBP. METHODS: This is a five-arm double-blind randomized controlled trial. Patients aged between 18 and 60 years with CLBP were randomly divided into 5 groups: CI4kHz/100Hz, CI4kHz/2Hz, CA4kHz/100Hz, CA4kHz/2Hz and placebo (PG). Participants received a single application of Interferential current or Aussie current for 30 min. Main outcome measures were pain intensity by numeric pain scale (NPS), McGill pain questionnaire (MPQ) and pressure pain threshold. The secondary outcomes assessed were: abdominal strength test (AST), lumbar flexion test (modified Schober test), trunk and lower limb mobility (sit and reach test and finger tip test). RESULTS: There was a significant difference in NPS and MPQ groups (with the exception of the affective component) (p<0.05) in IC 4 kHz/100 Hz and IC 4 kHz/2 Hz groups in relation to PG. Regarding secondary outcomes, a difference was found only between IC 4kHz/2Hz and PG in AET. CONCLUSION: Interferential current, regardless of frequency modulation, provided immediate analgesic effect in individuals with CLBP, being superior to the effects of Aussie current.

RESUMO JUSTIFICATIVA E OBJETIVOS: Apesar da grande utilização das correntes de média frequência na diminuição do quadro álgico na dor lombar crônica (DLC), ainda não existe consenso sobre os parâmetros ideais para tratamento. O objetivo deste estudo foi comparar os efeitos analgésicos imediatos das correntes interferencial (CI) e Aussie (CA) na DLC. MÉTODOS: Trata-se de um ensaio clínico randomizado controlado duplo-cego de cinco braços. Foram selecionados pacientes com idades entre 18 e 60 anos, com DLC, que foram divididos aleatoriamente em 5 grupos: CI4kHz/100Hz, CI4kHz/2Hz, CA4kHz/100Hz, CA4kHz/2Hz e placebo (GP). Os participantes receberam uma única aplicação da corrente Interferencial ou corrente Aussie durante 30 min. As principais medidas de desfechos foram: intensidade da dor pela escala numérica da dor (END), questionário de dor McGill (QDM) e limiar de dor por pressão. Os desfechos secundários avaliados foram: teste de resistência abdominal (TRA), teste de flexão da lombar (teste de Schober modificado), mobilidade de tronco e membros inferiores (teste de sentar e alcançar e teste de distância do terceiro dedo ao solo). RESULTADOS: Houve diferença significativa nos grupos END e QDM (com exceção do componente afetivo) (p<0,05) nos grupos CI 4 kHz/100 Hz e CI 4 kHz/2 Hz em relação ao GP. Com relação aos desfechos secundários foi encontrada diferença somente entre CI 4kHz/2Hz e GP no TRA. CONCLUSÃO: A corrente interferencial, independente da modulação da frequência, proporcionou efeito analgésico imediato em indivíduos com DLC, sendo superior aos efeitos da corrente Aussie.