Vibration, Proprioception, and Low Back Stability

振动、本体感觉和腰部稳定性

• 批准号: 6684345
• 负责人: SARA E WILSON
• 金额: $ 7.04万
• 依托单位: UNIVERSITY OF KANSAS LAWRENCE
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-30 至 2005-09-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6684345
• 关键词: back injury; behavior test; biofeedback; biomechanics; clinical research; electromyography; human subject; model design /development; muscle function; occupational disease /disorder; occupational stressor; proprioception /kinesthesia; questionnaires; spine; vibration

DESCRIPTION (provided by applicant): Occupational vibration exposure is a known risk factor for low back disorders. While past research has investigated issues such as transmission of vibration, the means by which vibration might result in low back pain is still not well understood. A possible mechanism by which vibration might result in low back injury is by a disruption of the proprioceptive system leading to decreased spinal stability and increased susceptibility to injury. Vibration has been shown in the past to alter several measures of proprioception in the joints of the extremities. These alterations change with the frequency of the vibration and last after the vibration has been withdrawn. However, these changes in proprioception have yet to be thoroughly investigated in the low back. The aims of this research are to begin to investigate the effects of vibration on proprioception in the low back and spinal stability. It is hypothesized that reposition sense error (one measure of proprioception) will increase with exposure to vibration. Further, it is expected that this increase will be different with different frequencies of vibration exposure. The temporal properties of these changes will be investigated. It is hypothesized that after removal of the vibration, the increased error will persist for some time before eventually returning to baseline. Finally, these changes in proprioception will be compared to changes in sudden load dynamics using a model of spinal dynamics in order to assess the effect of proprioception on spinal stability. This research is important to better understand what types of vibrations put a worker at risk, how these vibrations increase risk, and what may be done to reduce risk. For example, if it is found that proprioceptive changes last for 10 minutes after exposure, it may be prudent to recommend truck drivers and heavy equipment operators rest for 10 minutes before participating in heavy lifting activities. This work will provide the ground work for future research examining how proprioception is altered by occupational vibration exposure and how it affects the overall spinal stabilization.

描述（由申请人提供）：职业性振动暴露是腰背部疾病的已知危险因素。虽然过去的研究已经调查了振动的传播等问题，但振动可能导致腰痛的方式仍然没有得到很好的理解。振动可能导致下背部损伤的机制是本体感觉系统的破坏，导致脊柱稳定性下降和对损伤的易感性增加。在过去，振动已经被证明可以改变肢体关节的本体感觉。这些变化随着振动的频率而变化，并在振动被撤回后持续。然而，这些本体感觉的变化尚未在腰背部进行彻底的研究。本研究旨在探讨振动对下背部本体感觉及脊柱稳定性的影响。据推测，重新定位感觉误差（本体感觉的一种测量）会随着暴露于振动而增加。此外，预计这种增加将随着振动暴露的不同频率而不同。这些变化的时间性质将被研究。据推测，在消除振动后，增加的误差将持续一段时间，然后最终返回到基线。最后，为了评估本体感觉对脊柱稳定性的影响，将使用脊柱动力学模型将这些本体感觉的变化与突然负荷动力学的变化进行比较。这项研究对于更好地了解哪些类型的振动会使工人处于危险之中，这些振动是如何增加风险的，以及如何降低风险非常重要。例如，如果发现暴露后本体感觉变化持续10分钟，则建议卡车司机和重型设备操作员在参加举重活动前休息10分钟。这项工作将为未来研究本体感觉如何被职业性振动所改变以及它如何影响脊柱的整体稳定提供基础工作。