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. 2016 Mar 29;7:11034. doi: 10.1038/ncomms11034

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(a) Histogram of instantaneous velocity measures during the daily 2 h of 10 s GPS fixes. (b) Differentiation derived velocity versus instantaneous velocity for walking and trotting (10 s GPS fixes, blue, slope 0.84) and running (5 Hz, red, slope 0.47), averaged for 30 s windows. The lower ratio of differentiated to instantaneous velocity for running (5 Hz) shows the higher tortuosity during chases.