Investigating the role of physical activity domains in the prognosis of non-specific low back pain

Abstract

In the field of low back pain (LBP), physical deconditioning has long been hypothesized to compromise recovery. However, recent evidence from a longitudinal study supports the hypothesis that being physically active is a prognostic factor, which has a positive influence on the prognosis of chronic LBP. However, it is unclear whether physical activity domains have a similar influence on chronic LBP prognosis. Main objective: To investigate the role of different domains of physical activity on the prognosis of chronic LBP. Studies and specific objectives: To better understand the role of physical activity domains in the LBP prognosis, three research projects will be conducted. Study1 is an observational study investigating the reliability and validity of two self-reported multidimensional physical activity questionnaires, International Physical Activity Questionnaire (IPAQ) - long version and Habitual Physical Activity Questionnaire (also known as Baecke questionnaire), against an objective measure (accelerometer) in patients seeking care for chronic LBP. In Study 2, we will conduct in this population a head-to-head comparison of the responsiveness of four measures: 1 back-specific disability questionnaire (the Roland Morris disability questionnaire), 2 self-reported measures of physical activity (IPAQ and Baecke questionnaire) and an objective measure of physical activity (accelerometer) in patients with chronic nonspecific LBP. Study 3 is a longitudinal cohort study evaluating whether specific domains of physical activity, measured by IPAQ and the Baecke questionnaire, predict clinical outcomes in people seeking care for chronic LBP. Implications: The present research proposal will add to our knowledge on the relationships between physical activity domains relative to the clinical course of LBP and might be an important step for determining future application of accelerometers as well as self-reported measures of physical activity in the primary care management of LBP. (AU)