Determination of the number and frequency of the steps for gait with elbow crutches based on a crutch acceleration
Gait is one of the basic and most important forms of human locomotion. Gait can be described by parameters such as: speed, step length, stepping rate, ground reaction force values. One way to determine these parameters is analysis of acceleration of selected body segments. There are not many algorithms in the literature that could be used to analyze gait with the elbow crutches. Accordingly, an algorithm should be developed to determine, for example, the frequency and number of steps based on the crutch acceleration. In the following study, signal from IMU sensor located on elbow crutch was used to determine the parameters. The algorithm based on double filtration of recorded acceleration and peak detections from obtained signal. Results were compared and correlated with MVN Biomech motion capture system (high accuracy system). The discussion chapter considers uncertainty of the measuring methodology and the possibilities of using the designed system.
Keywordshuman gait crutches acceleration number of step determination
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