Cassidy JD, Carroll LJ, Cote P. The Saskatchewan health and back pain survey. The prevalence of low back pain and related disability in Saskatchewan adults. Spine. 1998;23:1860-1866.
Crow J, Pizzari T, Buttifant D. Muscle onset can be improved by therapeutic exercise: A systematic review. Phys Ther Sport. 2011 Nov;12(4):199-209. Epub 2011 Feb 26.
Tse MM, Wan VT, Ho SS. Physical exercise: does it help in relieving pain and increasing mobility among older adults with chronic pain? J Clin Nurs. 2011 Mar;20(5-6):635-44. doi: 10.1111/j.1365-2702.2010.03548.x.
Standaert CJ, Friedly J, Erwin MW, Lee MJ, Rechtine G, Henrikson NB, Norvell DC. Comparative effectiveness of exercise, acupuncture, and spinal manipulation for low back pain. Spine (Phila Pa 1976). 2011 Oct 1;36(21 Suppl):S120-30.