Appendix B

Steady speed Fourier coefficients during level trotting at 2.86 m s-1

Vertical force curves

a1,fore (BW)b2,fore (BW)a3,fore (BW)
U1.06±0.02-0.071±0.0140.051±0.008
M1.05±0.03-0.025±0.015*0.061±0.013
F1.08±0.02-0.041±0.011*0.064±0.012*
H1.02±0.03*-0.039±0.015*0.062±0.011
1.05 -0.044 0.060
a1,hind (BW)b2,hind (BW)a3,hind (BW)
U0.708±0.016-0.079±0.0080.019±0.003
M0.640±0.010*-0.060±0.011*0.010±0.006*
F0.636±0.015*-0.058±0.010*0.013±0.004*
H0.706±0.021-0.060±0.010*0.011±0.006*
0.673 0.064 0.013
Fore-aft force curves
a1,foreb2,forea3,fore
U-0.052±0.0040.149±0.005-0.002±0.005
M-0.055±0.0060.143±0.006-0.012±0.004*
F-0.045±0.005*0.153±0.005-0.007±0.004
H-0.050±0.0070.139±0.006*-0.004±0.005
-0.051 0.146 -0.006
a1,hindb2,hinda3,hind
U0.087±0.0050.075±0.0040.004±0.003
M0.085±0.0050.069±0.005*0.002±0.004
F0.073±0.006*0.070±0.003*0.004±0.003
H0.076±0.007*0.083±0.006*0.005±0.005
0.080 0.074 0.004
  • Values are ± 95% C.I. for each loading condition and overall means are shown.

    Significant differences (P<0.05) from the unloaded condition are indicated by asterisks.

    U, unloaded; M, mid-load; F, fore-load; H, hind-load.

    For an explanation of the Fourier coefficients a1, a2 and b2, see Materials and methods.