Table 3.

Mean and 95% confidence interval of the estimated material constants for passive and active models

Model	Parameter	Mean	LCL	UCL
Passive	C1, kPa	4.55	3.53	5.56
	a1	3.05	2.76	3.34
	a2	2.32	1.85	2.80
	a4	1.15	0.94	1.40
Active	C2, kPa	7.88	7.60	8.11
	b1	0.24	0.24	0.25
	b2	0.43	0.40	0.44
	b′	8.60	8.33	8.95

LCL, lower confidence limit; UCL, upper confidence limit.