Main functional roles of knee flexors/extensors in able-bodied gait using principal component analysis (I)
Main functional roles of knee flexors/extensors in able-bodied gait using principal component analysis (I)
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DOI：
10.1016/s0968-0160(01)00134-x
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发表时间：
2002-02-01
期刊：
影响因子：
1.9
通讯作者：
Labelle, H
中科院分区：
文献类型：
--
作者：
Sadeghi, H;Allard, P;Labelle, H
本研究旨在展示主成分分析（PCA）如何用于检测健全步态中膝关节屈/伸肌动作的主要功能结构。采用主成分分析法对20例年轻健康男性受试者行走过程中产生的膝关节矢状肌力矩进行分类和曲线结构检测。前三个主成分（PCs）提供的90%以上的信息被用于进一步的生物力学解释。PCA能够识别出健全步态中膝关节矢状肌力矩的三个主要功能贡献，即控制平衡、足部间隙/肢体准备和减震。(C) 2002 Elsevier Science B.V.版权所有
This study was undertaken to demonstrate how principal component analysis (PCA) can be used to detect the main functional structure of actions taken by knee flexors/extensors during able-bodied gait. PCA was applied as a classification and curve structure detection method for knee sagittal muscle moment developed during walking of 20 young, healthy male subjects. Over 90% of the information provided by the first three principal components (PCs) was chosen for further biomechanical interpretation. PCA was able to identify the three main functional contributions of knee sagittal muscle moment during able-bodied gait, namely control balance, foot clearance/limb preparation and shock absorption. (C) 2002 Elsevier Science B.V. All rights reserved.