L: Evaluation of the effectiveness and efficacy of iyengar yoga therapy on chronic low back pain. Spine (Phila Pa

Study Design. The effectiveness and efficacy of Iyen-gar yoga for chronic low back pain (CLBP) were assessed with intention-to-treat and per-protocol analysis. Ninety subjects were randomized to a yoga (n 43) or control group (n 47) receiving standard medical care. Partici-pants were followed 6 months after completion of the intervention. Objective. This study aimed to evaluate Iyengar yoga therapy on chronic low back pain. Yoga subjects were hypothesized to report greater reductions in functional disability, pain intensity, depression, and pain medication usage than controls. Summary of Background Data. CLBP is a musculoskel-etal disorder with public health and economic impact. Pilot studies of yoga and back pain have reported signif