Movement Variability and Digital Human Models: Development of a Demonstrator Taking the Effects of Muscular Fatigue into Account

Abstract : Movement variability is an essential characteristic of human movement. However , despite its prevalence, it is almost completely ignored in workstation design. Neglecting this variability can lead to skip over parts of the future opera-tor's movements, thus bring to incomplete assessment of biomechanical risk factors. This paper starts with a focus on movement variability in occupational activities. Then, as an example of feasibility, it describes a Digital Human Model framework intended to simulate the movement variability induced by muscle fatigue. The demonstrator is based on several simulation environments, namely 1) XDE, a virtual human simulation software tool previously used for ergonomics analyses, 2) a dynamic three-compartment model of muscle fatigue and recovery , and 3) OpenSim, a dynamic musculoskeletal simulation software. The demonstrator is a first step towards tools to assist designers in considering movement variability for improved ergonomics at the workstation.
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Vincent G. Duffy. Advances in Applied Digital Human Modeling and Simulation: Proceedings of the AHFE 2016 International Conference on Digital Human Modeling and Simulation, 481, Springer, pp.169 - 179, 2016, Advances in Intelligent Systems and Computing, 978-3-319-41626-7. <10.1007/978-3-319-41627-4_16>
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Jonathan Savin, Martine Gilles, Clarisse Gaudez, Vincent Padois, Philippe Bidaud. Movement Variability and Digital Human Models: Development of a Demonstrator Taking the Effects of Muscular Fatigue into Account. Vincent G. Duffy. Advances in Applied Digital Human Modeling and Simulation: Proceedings of the AHFE 2016 International Conference on Digital Human Modeling and Simulation, 481, Springer, pp.169 - 179, 2016, Advances in Intelligent Systems and Computing, 978-3-319-41626-7. <10.1007/978-3-319-41627-4_16>. <hal-01398504>

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