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The illustration of the multiphase fall segmentation for two situations. There are three phases, in turn: free fall phase, impact phase, and rest phase. (a) The situation of the maximum of Normxyz is larger than 6g, taking the data frame of the standing forward fall, for example; (b) The situation of the maximum of Normxyz is less than 6g, taking the data frame of the back-walking backward fall for example.
