Investigation of sit-to-stand and stand-to-sit in an above knee amputee.
Investigation of sit-to-stand and stand-to-sit in an above knee amputee.
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DOI：
10.1109/iembs.2011.6091712
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Huang H
中科院分区：
文献类型：
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作者：
Gao F;Zhang F;Huang H
本初步研究的目的有两个：1）提取膝上（AK）截肢者进行的坐-站和站-坐（STS）中的关键因素/特征; 2）提出一种方便的方法来量化对称性。一名男性单侧经股截肢者参加了初步研究。指导受试者以舒适和自然的方式起身，并进行一系列坐-站、站-坐。我们同时测量运动学，动力学和肌肉活动。主成分分析（PCA）被用来降低维数和识别模式，并提出了一个方便的指标STS对称性（误差椭圆长轴的斜率）使用鞋垫压力传感器。根据初步结果，建议AK截肢者进行STS时，应考虑矢状面和额状面的运动学和动力学。这些信息可能有助于截肢者STS的进一步研究。
the objective of this pilot study is twofold: 1) to extract key factors/features in sit-to-stand and stand-to-sit (STS) performed by an above knee (AK) amputee; 2) to propose a convenient way to quantify symmetry. One male unilateral transfemoral amputee participated in the pilot study. The subject was instructed to rise in a comfortable and natural manner and conduct a series of sit-to-stand, stand-to-sit. We simultaneously measured kinematics, kinetics and muscle activities. Principal component analysis (PCA) was used to reduce the dimension and identify modes and a convenient index of STS symmetry (slope of the major axis of the error ellipse) is proposed using the insole pressure sensors. Based on the preliminary results it is recommended that kinematics and kinetics in both the sagittal and frontal planes be considered for an AK amputee performing STS. The information might be useful for further research on amputee STS.