Fig. 8. Linear mechanical work W_lin(CoM) (A), Linear mechanical cost MCT_lin(CoM) (B), rotational mechanical work W_rot (C), rotational mechanical cost MCT_rot (D), linear + rotational mechanical work W_lin(CoM)+rot (E) and linear + rotational mechanical cost MCT_lin(CoM)+rot (F) for six galloping horses on the level (blue triangles) and incline (red circles) at a speed range of 8 m s^–1 to 12 m s^–1. For each speed category values are mean ±1 s.e.m. (N=6) for individual horses. 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).