5Von Korff M.Studying the natural history of back pain.Spine,1994,19:2041-2046.
6Hodges PW, Moseley GL. Pain and motor control of the lumbopelvic region: effect and possible mechanisms. J Electromyogr Kinesiol,2003,13:361-370.
7van Die(e)n JH,Selen L,Cholewicki J.Trunk muscle activation in low-back pain patients,an analysis of the literature.J Electromyogr Kinesiol,2003,13: 333-351.
8Kankaanp(aa)M, Taimela S, Webber CL,et al. Lumbar paraspinal muscle fatigability in repetitive isoinertial loading: EMG spectral indices, Borg scale and endurance time. Eur J Appl Physiol,1997,76:236-242.
9Kankaanp(aa)M, Taimela S, Laaksonen D, et al. Back and hip extensor fatigability in chronic low back pain atients and controls. Arch Phys Med Rehabil,1998,79:412-417.
10Larivi(e)re C, Arsenault AB, Gravel D, et al. Surface electromyography assessment of back muscle intrinsic properties. J Electromyogr Kinesiol,2003, 13:305-318.