Use of physical performance tests in a group of Brazilian Portuguese-speaking individuals with low back pain.

Low back pain (LBP) is a prevalent condition across cultures, and the tools used for assessment of distinct groups need to be evaluated. Our goal was to investigate the psychometric properties of physical performance tests (PPTs) in a group of Brazilian Portuguese-speaking (BPS) individuals with LBP in a nonexperimental, descriptive study. BPS individuals with and without LBP were studied, and PPTs, self-report questionnaires, and VAS pain score were evaluated.