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Biomechanics of Wheelchair Propulsion

轮椅推进的生物力学

基本信息

批准号：
7435393
负责人：
KAI-NAN AN
金额：
$ 26.77万
依托单位：
MAYO CLINIC ROCHESTER
依托单位国家：
美国
项目类别：
财政年份：
2005
资助国家：
美国
起止时间：
2005-08-01 至 2011-05-31
项目状态：
已结题

项目摘要

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150万美国人依靠手动轮椅进行移动，超过一半的人报告说他们的肩膀和/或其他上肢（UE）关节疼痛。虽然已经有大量的研究投入到了解轮椅推进的生物力学，没有明确的答案已经产生，以确定这种疼痛的病因。这可能是由于实验室收集的轮椅推进力不能完全代表真实的生活条件。迄今为止，没有数据存在，比较实验室与实地为基础的测量轮椅推进生物力学。此外，目前可用的运动学和动力学数据描述关节段间负荷可能不足以解释特定肌肉和软组织上的负荷。我们建议通过结合计算机建模开始获得基于现场的数据，以获得更深入的了解轮椅推进。该项目的第一个目的是对比使用一对无线仪表车轮在户外轮椅推进过程中施加的力和力矩，并在户外试验期间记录的速度和功率下在轮椅测力计上收集数据。本研究的第二个目的将涉及一个肌肉骨骼模型的发展，以确定激活模式的主题，因为他们推动在平地上，坡道上，和沿着一个边坡。优化技术将用于确定肌肉力量分布，模型结果将通过与EMG数据的相关性进行验证。这样一个验证过的模型将有助于了解用户在不同地形上推进时UE肌肉响应的变化。我们的目的是在用户的自然环境中提供UE节段间关节载荷和肌肉力量的更真实的图片。随后，这将有助于开发治疗手段，以保护肩部免受伤害。