Table 1.

Subject demographics, uniform and subject-specific weighting coefficients, and error between experimental and simulated joint contact forces. Errors expressed in terms of root mean squared error (RMSE), as well as first and second peak errors relative to body weight (BW) for four methods: standard optimization (SO), uniform weighting (UW), subject-specific weighting (SSW) and subject-specific strength (SSS). See text for details.

		Subject 1	Subject 2	Subject 3
Gender		M	M	F
Height (m)		1.66	1.72	1.67
Weight (kg)		64.6	67	78.4
Knee		R	R	L
Uniform Weights	PF	7	7	7
	H	3	3	3
	Q	1	1	1
Subject- Specific Weights	PF	2	2	1
	H	6	10	1
	Q	3	6	3
RMSE (BW)	SO	0.67	0.59	0.37
	UW	0.43	0.48	0.48
	SSW	0.34	0.41	0.33
	SSS	0.40	-	0.37
Peak 1 Error (BW)	SO	0.56	0.95	0.14
	UW	0.31	0.62	0.39
	SSW	0.11	0.22	0.24
	SSS	0.10	-	0.24
Peak 2 Error (BW)	SO	1.37	0.83	0.40
	UW	0.59	0.46	0.74
	SSW	0.01	0.15	0.09
	SSS	0.42	-	0.33