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Fig. 7. Means of binned rectified EMG traces of the appendicocostalis muscle during
(A) coupled walking: breathing and footfall in phase, (B) uncoupled running
relative to breath: the onset of expiratory airflow to the end of inspiratory
airflow and (C) uncoupled running relative to stride: one stride length. Data
are presented from Goose A, averaged over 20 breaths or 20 strides. The
appendicocostalis is an inspiratory muscle but does demonstrate some locomotor
function which correlates with contralateral limb support.