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Mean lengths (% L0) and representative traces of electromyographic activity in the anterior (red) and posterior (blue) fascicles of the ILPO of guinea fowl walking at 0.5 m s–1 (A), and running at 2.5 m s–1 (B). Traces are plotted for an average stride from foot-down to foot-down with toe-off indicated with a black arrow. Shaded bands indicate ±1 s.e.m.
