Fig. 3. Displacement range (A), minimum and maximum velocity (B) and minimum and maximum acceleration (C) from 8 m s^–1 to 12 m s^–1 for pitch (left column) and heading (right column) on the level (blue triangles) and incline (red circles) for the six horses. For each speed category mean ±1 s.e.m. (displacement) or median and interquartile range (velocity and acceleration) are calculated from all strides. A linear function was fitted to the data and is shown as a red solid line (incline data) and a blue broken line (level data).