Magnetic resonance imaging showed no signs of overuse or permanent injury to the lumbar sacral spine during a Special Forces training course

Wilke, 1999, New in vivo measurements of pressures in the intervertebral disk in daily life, Spine, 24, 755, 10.1097/00007632-199904150-00005 Nachemson, 1981, Disk pressure measurements, Spine, 6, 93, 10.1097/00007632-198101000-00020 Burr, 1996, In vivo measurement of human tibial strains during vigorous activity, Bone, 18, 405, 10.1016/8756-3282(96)00028-2 Adams, 2006, What is intervertebral disc degeneration, and what causes it?, Spine, 31, 2151, 10.1097/01.brs.0000231761.73859.2c Hassett, 2003, Risk factors for progression of lumbar spine disc degeneration: the Chingford Study, Arthritis Rheum, 48, 3112, 10.1002/art.11321 Ala-Kokko, 2002, Genetic risk factors for lumbar disc disease, Ann Med, 34, 42, 10.1080/078538902317338634 Battie, 2004, Lumbar disc degeneration: epidemiology and genetic influences, Spine, 29, 2679, 10.1097/01.brs.0000146457.83240.eb Waters TR, Putz-Anderson V, Garg A. Applications manual for the revised NIOSH lifting equation. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 94-110, Cincinnati, OH: 1994:115. Adams, 2000, Mechanical initiation of intervertebral disc degeneration, Spine, 25, 1625, 10.1097/00007632-200007010-00005 Milgrom, 1985, Stress fractures in military recruits. A prospective study showing an unusually high incidence, J Bone Joint Surg Br, 67, 732, 10.1302/0301-620X.67B5.4055871 Tertti, 1990, Disk degeneration in young gymnasts. A magnetic resonance imaging study, Am J Sports Med, 18, 206, 10.1177/036354659001800216 Videman, 1995, The long-term effects of physical loading and exercise lifestyles on back-related symptoms, disability, and spinal pathology among men, Spine, 20, 699, 10.1097/00007632-199503150-00011 Videman, 1990, Lumbar spinal pathology in cadaveric material in relation to history of back pain, occupation, and physical loading, Spine, 15, 728, 10.1097/00007632-199008000-00002 Kursunoglu-Brahme, 1990, Jogging causes acute changes in the knee joint: an MR study in normal volunteers, AJR Am J Roentgenol, 154, 1233, 10.2214/ajr.154.6.2110734 Krampla, 2001, MR imaging of the knee in marathon runners before and after competition, Skeletal Radiol, 30, 72, 10.1007/s002560000296 Kujala, 1994, Osteoarthritis of weight bearing joints of lower limbs in former elite male athletes, BMJ, 308, 231, 10.1136/bmj.308.6923.231 Kettunen, 2001, Lower-limb function among former elite male athletes, Am J Sports Med, 29, 2, 10.1177/03635465010290010801