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. 2020 Jul-Aug;24(4):358-364.
doi: 10.1016/j.bjpt.2019.05.006. Epub 2019 Jun 13.

Baseline characteristics did not identify people with low back pain who respond best to a Movement System Impairment-Based classification treatment

Daniel Camara Azevedo  1 , Paulo Henrique Ferreira  2 , Henrique de Oliveira Santos  3 , Daniel Ribeiro Oliveira  3 , Joao Victor Leite de Souza  3 , Leonardo Oliveira Pena Costa  4
Affiliations

Baseline characteristics did not identify people with low back pain who respond best to a Movement System Impairment-Based classification treatment

Daniel Camara Azevedo et al. Braz J Phys Ther. 2020 Jul-Aug.

Abstract

Study design: Secondary analysis of data from a randomized controlled trial.

Background: Treatment based on the Movement System Impairment-Based classification for chronic low back pain results in the same benefit when compared to other forms of exercise. It is possible that participant's characteristics measured at baseline can identify people with chronic low back pain who would respond best to a treatment based on the Movement System Impairment model.

Objectives: To assess if specific characteristics of people with chronic low back pain measured at baseline can modify the effects of a treatment based on the Movement System Impairment model on pain and disability.

Methods: Four variables assessed at baseline that could potentially modify the treatment effects of the treatment based on the Movement System Impairment model were selected (age, educational status, physical activity status and STarT back tool classification). Separate univariate models were used to investigate a possible modifier treatment effect of baseline participant's characteristics on pain and disability after the treatment. Findings of interaction values above 1 point for the outcome mean pain intensity or above 3 points for disability (Roland Morris questionnaire) were considered clinically relevant.

Results: Linear regression analyses for the outcomes of pain and disability did not show interaction values considered clinically relevant for age, educational status, physical activity status and STarT back tool classification.

Conclusion: Age, educational status, physical activity status and STarT back tool classification did not modify the effects of an 8-week treatment based on the Movement System Impairment model in patients with chronic low back pain. Registered at www.clinicaltrials.gov: NCT02221609 (https://clinicaltrials.gov/ct2/show/NCT02221609).

Keywords: Disability; Musculoskeletal; Pain; Rehabilitation.

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