Fig. 10. Stride frequency vs mean stance climbing power (P_c) per stride cycle for galloping horses (coloured lines). P_c was calculated assuming the work was performed during the hindlimb stance period. Data were categorised into 1 m s^–1 speed bins and linear regression lines (solid lines) and 95% confidence intervals (broken lines) have been plotted. Each colour represents data from a 1 m s^–1 speed bin. Calculated P_c and stride frequency from figures and data of Wickler et al. (Wickler et al., 2005) measured from trotting horses are also presented (black data points). As data are categorised into speed bins, moving from left to right represents an increase in incline.