Biomechanics of Wheelchair Propulsion

轮椅推进的生物力学

• 批准号: 7103480
• 负责人: KAI-NAN AN
• 金额: $ 28万
• 依托单位: MAYO CLINIC ROCHESTER
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7103480
• 关键词: assistive device /technology; biomechanics; clinical research; computer simulation; computer system design /evaluation; electromyography; human subject; musculoskeletal injury; shoulder

DESCRIPTION (provided by applicant): Over 1.5 million Americans rely on manual wheelchairs for mobility, and over half report experiencing pain in their shoulders and/or other upper extremity (UE) joints. While there has been a great amount of research invested towards understanding the biomechanics of wheelchair propulsion, no definitive answers have been produced to determine the etiology of this pain. This may be due to the fact that laboratory collection of wheelchair propulsion may not fully represent real life conditions. To date, no data exists that compares laboratory versus field based measurements of wheelchair propulsion biomechanics. Additionally, currently available kinematic and kinetic data describing joint intersegmenal loads may not be adequate for explaining the loading on specific muscles and soft tissues. We propose to gain a deeper understanding of wheelchair propulsion by starting to obtain field-based data in combination with computer modeling. The first aim of this project is to contrast the forces and moments exerted during outdoor wheelchair propulsion using a pair of wireless instrumented wheels with data collected on a wheelchair ergometer during propulsion at the speed and power recorded during the outdoor trial. The second aim of the-study will involve the development of a musculoskeletal model to determine the activation patterns of the subjects as they propel on level ground, up a ramp, and along a sideslope. Optimization techniques will be used to determine muscle force distribution and model results will be validated through correlation with EMG data. Such a validated model will lend insight as to the changes in UE muscle response as users propel over varied terrains. It is our intent to provide a more realistic picture of UE intersegmental joint loads and muscle forces in the natural environment of the user. Subsequently this will aid in the development of therapeutic means to protect the shoulder from injury.

描述（由申请人提供）：超过150万的美国人依靠手动轮椅进行移动性，以及一半以上的报告在肩膀和/或其他上肢（UE）关节中经历疼痛。尽管已经投入了大量研究来理解轮椅推进的生物力学，但没有产生确定这种疼痛的病因的确定答案。这可能是由于实验室收集轮椅推进的事实可能不能完全代表现实生活中的状况。迄今为止，尚无数据比较实验室与田间的基于轮椅推进生物力学的测量。此外，目前可用的运动学和动力学数据描述了关节间跨性负荷可能不足以解释特定肌肉和软组织的负载。我们建议通过与计算机建模结合获得基于现场的数据来深入了解轮椅推进。该项目的第一个目的是对比室外轮椅推进期间使用一对无线仪表轮的力量和力矩与在室外试验期间记录的速度和功率时在轮椅台上收集的数据进行对比。研究的第二个目的将涉及肌肉骨骼模型的发展，以确定受试者在水平地面，向上坡道和沿侧坡上推动的激活模式。优化技术将用于确定肌肉力分布，模型结果将通过与EMG数据相关性来验证。这种经过验证的模型将对UE肌肉反应的变化有所了解，因为用户推动了各种地形。我们的目的是提供对用户自然环境中UE节段关节载荷和肌肉力的更现实的图片。随后，这将有助于开发治疗手段，以保护肩膀免受伤害。