Vlaeyen JWS, Kole-Snijders AMJ, Boren RGB, van Eek H. Fear of movement/(re) injury in chronic low back pain and its relation to behavioural performance. Pain 1995; 62: 363-372.
van der Roer N, van Tulder M, Barendse J, Knol D, van Mechelen W, de Vet H. Intensive group training protocol versus guideline physiotherapy for patients with chronic low back pain: a randomised controlled trial. Eur Spine J. 2008 Sep;17(9):1193-200. Epub 2008 Jul 29.
Bendix AF , Bendix T, Ostenfeld S, Bush E, Andersen A. Active treatment programs for patients with chronic low back pain: a prospective, randomized, observer-blinded study. European Spine Journal 1995; 4(3):148-152.
Wen CP, Wai JP, Tsai MK, Yang YC, Cheng TY, Lee MC, Chan HT, Tsao CK, Tsai SP, Wu X. Minimum amount of physical activity for reduced mortality and extended life expectancy: a prospective cohort study. Lancet. 2011 Oct 1;378(9798):1244-53. Epub 2011 Aug 16.
Burke MJ, Sarpy SA, Smith-Crowe K, Chan-Serafin S, Salvador RO, Islam G. Relative effectiveness of worker safety and health training methods. Am J Public Health 2006;96:315-24.