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Fig. 4. Protraction duration as a function of speed. Values are means + s.e.m. for
forelimb level and hindlimb level and means – s.e.m. for forelimb
incline and hindlimb incline (for clarity; N=6 throughout) of
individual horse mean data for fore- and hindlimbs (indicated by different
symbols) during level (0–2%) and incline (8–12%) galloping for the
six horses. Quadratic lines of best fit (P<0.001) are shown. These
were estimated for the population using mean data. Coefficients: forelimb
level b0=86.7, b1=50.37,
b2=–2.38, r2=0.11; forelimb
incline b0=89.13, b1=48.60,
b2=–2.38, r2=0.17; hindlimb
level b0=4.02, b1=66.39,
b2=–3.19, r2=0.19; hindlimb
incline b0=233.59, b1=19.81,
b2=–1.00, r2=0.06.