Low back pain prevalence in Sao Paulo, Brazil: A cross-sectional study.

Background: Low back pain (LBP) is the leading cause of disability worldwide, and the burden of LBP is expected to increase in coming decades, particularly in middle-income countries. There is a lack of large and high-quality studies investigating the prevalence of LBP in Brazil.

Objective: To estimate the point, one-year, and lifetime prevalence of non-specific LBP in adults from the city of São Paulo, Brazil.

Photobiomodulation therapy is not better than placebo in patients with chronic nonspecific low back pain: a randomised placebo-controlled trial.

Photobiomodulation therapy (PBMT) has been used in several musculoskeletal disorders to reduce pain, inflammation, and promoting tissue regeneration. The current evidence about the effects of PBMT on low back pain (LBP) is still conflicting. We aimed to evaluate the effects of PBMT against placebo on pain intensity and disability in patients with chronic nonspecific LBP.

Effects of photobiomodulation therapy in patients with chronic non-specific low back pain: protocol for a randomised placebo-controlled trial.

Introduction: Low back pain (LBP) is one of the largest and most frequent public health problems worldwide. Photobiomodulation therapy (PBMT) is a frequently used non-pharmacological therapy for the treatment of musculoskeletal disorders. However, there is little high-quality scientific evidence that demonstrates the effectiveness of PBMT in the treatment of patients with chronic LBP in the short, medium and long term.