Table 3.

Kinetic gait parameters in the frontal plane for three walking tasks in different knee-OA groups

walking types, and gait parameters	adjusted mean †			p-values for the comparisons between
	no-OA(N =112)	knee-OA		knee-OA vs. no-OA	asymptomatic vs. no-OA	symptomatic vs. no-OA	asymptomatic vs. symptomatic
		asymptomatic (N =24)	symptomatic (N =17)
usual-walking
Peak moment in frontal plane, Nm/kg
Hip	0.87	0.91	0.88	0.172	0.217	0.951	0.601
Knee	0.43	0.48	0.51	0.003	0.109	0.018	0.684
Ankle	0.17	0.16	0.18	0.901	0.882	0.926	0.788
Total MWE in frontal plane, 1000*J/kg
Generative hip	74.52	87.95	90.14	0.014	0.140	0.136	0.972
Generative Knee	10.62	11.32	14.40	0.165	0.912	0.141	0.400
Generative Ankle	9.59	12.59	7.96	0.523	0.317	0.776	0.240
Absorptive hip	47.52	47.41	47.40	0.978	0.999	0.999	0.999
Absorptive knee	20.16	24.18	23.47	0.127	0.367	0.598	0.984
Absorptive ankle	17.38	19.81	16.91	0.582	0.646	0.988	0.721
fast-walking
Peak moment in frontal plane, Nm/kg
Hip	0.94	0.96	0.93	0.625	0.702	0.989	0.766
Knee	0.50	0.52	0.55	0.199	0.726	0.419	0.873
Ankle	0.19	0.16	0.20	0.297	0.134	0.842	0.156
Total MWE in frontal plane, 1000*J/kg
Generative hip	76.67	88.59	95.86	0.012	0.226	0.057	0.748
Generative Knee	15.89	14.72	19.49	0.702	0.893	0.450	0.382
Generative Ankle	12.92	10.48	12.55	0.556	0.739	0.995	0.893
Absorptive hip	74.05	78.96	80.45	0.388	0.806	0.759	0.990
Absorptive knee	23.51	26.72	25.79	0.268	0.561	0.801	0.975
Absorptive ankle	22.51	17.78	24.64	0.434	0.239	0.800	0.210
usual-walking-after-30min
Peak moment in frontal plane, Nm/kg
Hip	0.88	0.93	0.90	0.070	0.131	0.739	0.715
Knee	0.44	0.51	0.52	0.006	0.087	0.081	0.962
Ankle	0.18	0.17	0.20	0.624	0.783	0.219	0.150
Total MWE in frontal plane, 1000*J/kg
Generative hip	78.72	97.69	94.53	0.004	0.033	0.164	0.950
Generative Knee	11.82	14.96	17.43	0.008	0.220	0.029	0.610
Generative Ankle	10.61	11.56	10.56	0.742	0.883	0.999	0.932
Absorptive hip	52.21	52.56	56.34	0.647	0.997	0.764	0.855
Absorptive knee	21.36	24.96	23.93	0.246	0.528	0.783	0.973
Absorptive ankle	19.92	17.17	25.34	0.753	0.469	0.115	0.035

^†Speed adjusted by age, sex, height and weight; Others adjusted by speed, age, sex, height and weight

MWE = mechanical work expenditure