Table 2.

Mean vertical force, mean fore-aft acceleration and vertical impulse ratio

Loading conditionDogz (BW)Āy (BW)RR0
(A)
UA1.0370.00370.6630.665
UB0.9870.05350.6400.678
UC1.0750.02480.6580.676
UD1.055-0.01550.6260.615
UE1.0270.01420.5960.606
U 1.036±0.015 0.0161±0.0115 0.637±0.012 0.648±0.016
MA0.998-0.03300.6930.670
MB0.9270.00970.6710.678
MC1.0100.02000.6840.698
MD1.0040.00930.6370.644
ME0.9950.00420.6170.619
M 0.987±0.015 0.0020±0.0091 0.660±0.015 0.662±0.014
FA0.976-0.03230.7120.689
FB0.9570.00500.6820.685
FC0.9990.02110.7000.715
FD1.009-0.03920.6820.654
FE0.9760.00230.6290.631
F 0.983±0.009 -0.0086±0.0116 0.681±0.014 0.675±0.015
HA1.0130.00560.6440.648
HB0.974-0.00340.6280.626
HC1.0170.01580.6290.640
HD1.004-0.01010.5910.584
HE1.0050.03290.5660.589
H 1.002±0.008 0.0082±0.0076 0.612±0.015 0.617±0.013
(B)
U vs. M-0.049***-0.0141ns0.024**0.014ns
U vs. F-0.053***-0.0248ns0.044***0.027**
U vs. H-0.034**-0.0080ns-0.025***-0.031**
M vs. F-0.004ns-0.0107ns0.021**0.013ns
M vs. H0.016ns0.0061ns-0.049***-0.044***
F vs. H0.019ns0.0168ns-0.069***-0.057***
  • z, mean vertical force; Āy, mean fore-aft acceleration; R, vertical impulse ratio; R0, R at steady speed.

    Sample means are given for each dog and loading condition (U, unloaded; M, mid-load; F, fore-load; H, hind-load).

    BW, body weight, or 110% body weight during experimental loading.

    See the text for parameter definitions.

  • (A) values are means for each dog and group means ± s.e.m. for each loading condition

  • (B) Differences between means of each loading condition (e.g. `U vs. M' was computed as M̄-Ū). Asterisks indicate the results of Tukey-Kramer tests comparing each loading condition to the other

  • *** P<0.001

  • ** P<0.01, *P<0.05

  • ns P>0.05)