Journal of the Society of Biomechanisms
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Volume 28, Issue 4
Displaying 1-9 of 9 articles from this issue
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  • The estimation of muscle fatigue using chaos analysis
    Hanae YOSHIDA, Hideki UJIIE, Kosei ISHIMURA, Mitsuo WADA
    2004 Volume 28 Issue 4 Pages 201-212
    Published: 2004
    Released on J-STAGE: November 17, 2006
    DOIhttps://doi.org/10.3951/sobim.28.201
    JOURNAL FREE ACCESS
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    The purpose of this study is to measure muscle fatigue from EMG through non-invasive way. The measurements of muscle fatigue have been required in various fields. The linear analysis method such as Fast Fourier Transformation (FFT) has been used as the common way to analyze EMG. However, there would be some types of muscle fatigue which cannot be detected by the linear analysis but could be detected by nonlinear analysis because of nonlinearity of biological signals. In this study, we analyzed EMG recorded from 17 subjects to evaluate the ability of nonlinear analysis. As a result, more kinds of muscle fatigue can be detected through both linear analysis (ex. FFT) and nonlinear analysis (ex. chaos analysis) than linear analysis only.
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  • Study of motion analysis for artificial knee joint flat panel detector
    Takeshi SHIMOTO, Hidehiko HIGAKI, Takanobu FUKUNAGA, Seiji YASUTAKE, Y ...
    2004 Volume 28 Issue 4 Pages 213-220
    Published: 2004
    Released on J-STAGE: November 17, 2006
    DOIhttps://doi.org/10.3951/sobim.28.213
    JOURNAL FREE ACCESS
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    In vivo analysis of 3-D kinematics of total knee arthroplasty (TKA) has been expected as one of the most important technique for design of artificial knee joints in future generation. This study was aimed to develop a highly reliable 3-D motion analysis by using image matching (IM) technique with wide-spreading high-resolutional flat panel detector (FPD). In this report, the accuracy of the motion analysis method for TKA was confirmed using some X-ray images taken experimentally. The analysis method we developed could achieve higher accuracy than previous studies in both of rotation and translation.
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