DYNAMIC POSTURAL EQUILIBRIUM

动态姿势平衡

• 批准号: 2758793
• 负责人: STEVEN M BOKER
• 金额: $ 12.62万
• 依托单位: UNIVERSITY OF NOTRE DAME
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2758793
• 关键词: accidental falls; age difference; auditory stimulus; balance; clinical research; cues; disease /disorder proneness /risk; head movements; human middle age (35-64); human old age (65+); human subject; longitudinal human study; mathematical model; neural information processing; posture; proprioception /kinesthesia; visual perception

DESCRIPTION (Adapted from the Applicant's Abstract): Falling is a common problem among elderly adults. Each year about half the residents of nursing homes experience a fall, and of those individuals about 15% are seriously injured. While there are many factors that may be associated with falling, deterioration of the postural control system is a serious risk factor for falling. This proposal is designed to provide evidence with regard to the following five questions: 1) whether linear models are sufficient to capture the behavior of the postural control system, 2) whether the assumption of static equilibrium is supported by the behavior of the postural control system, 3) whether center of pressure (COP) and head movement can be used interchangeably, 4) whether there exist resonant frequencies in the postural control system, and 5) whether prospective adjustment in visually guided postural control is related to resonant frequencies in the system. Each of these questions is likely to exhibit age-related differences that may be diagnostic of reduced postural control in aging and the attendant increased risk of falling in older adults. There are seven specific aims that are addressed by this research project: 1) constrain the choice of models for postural control, 2) test whether kinematic and COP measurements can be used interchangeably, 3) provide evidence against either the static or dynamic equilibrium hypotheses, 4) test for age-related differences in the first 3 aims, 5) generate a young-adult baseline set of observations and develop and test models of postural control in these data, 6) test for both parametric and structural age-related differences in these models, and 7) prepare and archive the data for data-sharing and longitudinal follow-up.

描述（改编自申请人的摘要）：跌倒是常见的 老年人的问题。每年大约有一半的居民 养老院经历了跌倒，其中约15%的人是 重伤虽然有很多因素可能与 随着跌倒，姿势控制系统的恶化是严重的 跌倒的危险因素。 本提案旨在提供证据，说明 以下五个问题：1）线性模型是否足以 捕获姿势控制系统的行为，2）是否 静态平衡的假设得到了 姿势控制系统，3）是否压力中心（COP）和头部 运动可以互换使用，4）是否存在共振 频率在姿势控制系统，和5）是否前瞻性 视觉引导姿势控制中的调整与共振 系统中的频率。这些问题中的每一个都可能表现出 年龄相关的差异，可能是诊断减少姿势 控制衰老和随之而来的老年人跌倒的风险增加 成年人了 本研究提出了七个具体目标 项目：1）约束姿势控制模型的选择，2）测试 运动学和COP测量是否可以互换使用，3） 提供反对静态或动态平衡的证据 假设，4）测试前3个目标中与年龄相关的差异，5） 生成一组成人基线观察结果，并开发和测试 在这些数据中的姿势控制模型，6）测试两个参数 以及这些模型中与年龄相关的结构差异，以及7）准备 并将数据存档，以便进行数据共享和纵向跟踪。