minimum number of IMUs

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Chrysa Tsimperi
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Joined: Wed Feb 08, 2023 12:44 am

minimum number of IMUs

Post by Chrysa Tsimperi » Thu Mar 16, 2023 2:43 am

Hi,

I would like to know if there is any minimum number of IMUs that are required to extract kinematics by walking?
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OpenSim 4.2
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Thomas Uchida
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Joined: Wed May 16, 2012 11:40 am

Re: minimum number of IMUs

Post by Thomas Uchida » Thu Mar 16, 2023 8:52 am

It may depend on what you mean by "kinematics" (i.e. what variables you are trying to measure) and the required measurement accuracy. Wrist-worn devices provide some information using just one sensor. The suit from Xsens accommodates 17. You might want to look around in the literature for studies that have asked your question. For example: O'Day et al. (2022) Assessing inertial measurement unit locations for freezing of gait detection and patient preference. Journal of NeuroEngineering and Rehabilitation 19 (https://doi.org/10.1186/s12984-022-00992-x).
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