JEB -- Fife et al. 204 (13): 2371 Figure IG2

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Fig. 2. Average electromyographic (EMG) activity in the left abdominal external oblique muscle from four dogs trotting at intermediate speeds. Each trace represents the average rectified signal from 15 strides. The EMG signals are plotted relative to an average limb support cycle (N=5) for each dog. The phases of limb support are labeled in A: LH, left hind, top trace; LF, left fore, second trace; RF, right fore, third trace; RH, right hind, bottom trace. (A) 24.5kg dog trotting at 2.2ms^-1. (B) 21.6kg dog trotting at 2.4ms^-1. (C) 34.1kg dog trotting at 2.0ms^-1. (D) 22.7kg dog trotting at 2.5ms^-1.