Fig. 7. Predicted peak vertical force, normalised to total mass of subject (including mass of horse, riding tack and rider) as a function of speed (N=9). Values are means ± s.d. of individual horse mean data for fore- and hindlimbs (red and blue, respectively). Quadratic lines of best fit (P<0.001) are shown for the population. These were calculated for fore- and hindlimbs separately using mean data. Coefficients: forelimb b₀=-2.778, b₁=2.1376 and b₂=-0.0535; hindlimb b₀=1.3249, b₁=1.5444 and b₂=-0.041.