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首页> 外文会议>Mediterranean Conference on Medical and Biological Engineering and Computing >Statistical Analysis of EMG Signal Acquired from Tibialis Anterior during Gait
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Statistical Analysis of EMG Signal Acquired from Tibialis Anterior during Gait

机译：步态胫骨前胫骨前的EMG信号统计分析

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摘要

Aim of the present study was to identify the different modalities of activation of tibialis anterior (TA) during gait at self-selected speed, by a statistical analysis of surface electromyographic signal from a large number (hundreds) of strides per subject. The analysis on ten healthy adults showed that TA is characterized by different activation modalities within different strides of the same walk. The most recurrent modality consists of three activations observed in 37.4±1.9% of total strides: at the beginning of gait cycle, around stance-to swing-transition and in the terminal swing. Further two modalities differ from the most recurrent one because of 1) the continuous activation during swing; 2) a further activity in the late mid-stance. The study of these different modalities of activation suggested that TA acts as pure ankle dorsi-flexor only in a small percentage (~20%) of total strides, where TA activity occurs in the simpler modality. The increase in the complexity of the recruitment of the muscle introduces an uncommon activity during mid-stance, which does not occur for the flexion of the ankle but is related to the activity of the TA as a foot invertor muscle.
机译：本研究的目的是通过从每个受试者的大量（数百个）的表面电焦信号的统计分析，鉴定在自选速度的步态期间胫骨前（TA）的激活的不同模式。对十个健康成年人的分析表明，TA的特点是同一步行不同的不同程度的激活方式。最复发的模态由总进步的37.4±1.9％观察到的三个激活组成：在步态周期开始，围绕立场 - 摆动过渡和终端摆动。另外两种方式与最常复发性不同，因为1）摆动期间的连续激活; 2）晚期中期姿势的进一步活动。对这些不同的激活方式的研究表明，TA仅作为纯脚踝背屈，仅以总步进的小百分比（〜20％），其中TA活动发生在更简单的模态中。肌肉募集的复杂性的增加引入了中间姿势期间的罕见活动，这不会发生踝关节的屈曲，而是与TA作为脚逆变器肌肉的活性有关。

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