一种简化的全身角动量计算模型。
A simplified model for whole-body angular momentum calculation.
机构信息
Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Raleigh, North Carolina, United States.
Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Raleigh, North Carolina, United States.
出版信息
Med Eng Phys. 2023 Jan;111:103944. doi: 10.1016/j.medengphy.2022.103944. Epub 2022 Dec 19.
The capability to monitor gait stability during everyday life could provide key information to guide clinical intervention to patients with lower limb disabilities. Whole body angular momentum (L) is a convenient stability indicator for wearable motion capture systems. However, L is costly to estimate, because it requires monitoring all major body segment using expensive sensor elements. In this study, we developed a simplified rigid body model by merging connected body segments to reduce the number of body segments, which need to be monitored. We demonstrated that the L could be estimated by a seven-segment model accurately for both people with and without lower extremity amputation.
日常生活中监测步态稳定性的能力可以为指导下肢残疾患者的临床干预提供关键信息。整体角动量（L）是可穿戴运动捕捉系统的一个方便的稳定性指标。然而，L 的估计成本很高，因为它需要使用昂贵的传感器元件来监测所有主要的身体部位。在这项研究中，我们通过合并连接的身体部位来开发了一个简化的刚体模型，以减少需要监测的身体部位的数量。我们证明，对于有和没有下肢截肢的人，L 都可以通过七段模型准确估计。
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