Cholewicki Jacek, Shah Krupal R, McGill Kevin C
Biomechanics Research Laboratory, Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT 06520-8071, USA.
J Orthop Sports Phys Ther. 2006 Apr;36(4):225-31. doi: 10.2519/jospt.2006.36.4.225.
Longitudinal, repeated-measures, factorial design. The trunk axial rotation repositioning error was the dependent variable, while the orthoses, test mode (passive versus active), and the testing session were the independent variables.
To verify whether lumbosacral orthoses (LSOs) affect proprioception in the lumbar spine and whether these effects change over a 3-week period during which the LSO is consistently worn.
To date, there is no compelling evidence that lumbar orthoses support the spine. One hypothesis advanced by several authors is that they may enhance position sense (proprioception) in the lumbar spine.
Fourteen subjects without low back pain wore lumbosacral orthoses 3 hours a day for 3 weeks. Spine proprioception was tested in a seated posture in 3 sessions (days 0, 7, and 21).
A significant 3-way interaction was found between the effects of the orthoses, session, and test mode (P = .03). The ratio of passive to active average error indicated that after 3 weeks of wearing LSO, proprioception in the passive test worsened in relation to the active test with the LSO. In contrast, proprioception in the passive test improved in relation to the active test when performed without the LSO.
The LSO did affect proprioception in the lumbar spine. These effects most likely changed over time due to sensorimotor adaptation. However, no overall proprioceptive benefits could be ascertained from healthy subjects wearing the LSO.
纵向、重复测量、析因设计。躯干轴向旋转重新定位误差为因变量，而矫形器、测试模式（被动与主动）和测试阶段为自变量。
验证腰骶矫形器（LSO）是否会影响腰椎本体感觉，以及在持续佩戴LSO的3周时间内这些影响是否会发生变化。
迄今为止，尚无确凿证据表明腰椎矫形器能支撑脊柱。几位作者提出的一种假设是，它们可能会增强腰椎的位置觉（本体感觉）。
14名无腰痛的受试者每天佩戴腰骶矫形器3小时，共3周。在3个阶段（第0天、第7天和第21天）以坐姿测试脊柱本体感觉。
发现矫形器、测试阶段和测试模式的效应之间存在显著的三因素交互作用（P = 0.03）。被动与主动平均误差的比值表明，佩戴LSO 3周后，被动测试中的本体感觉相对于佩戴LSO的主动测试变差。相比之下，在不佩戴LSO进行测试时，被动测试中的本体感觉相对于主动测试有所改善。
LSO确实会影响腰椎本体感觉。由于感觉运动适应，这些影响很可能随时间发生变化。然而，无法确定健康受试者佩戴LSO会带来总体的本体感觉益处。
