Table 3:

Parameters for the four-fiber family model describing average response of human TAs in 7 age groups. A total of 19 different loading protocols were used to determine constitutive parameters in this model. The coefficient of determination R² ≥ 0.99 in all age groups.

Four-fiber family model
Age group (years)	Cgr, kPa	${\mathit{C}}_{\mathbf{1}}^{\mathbf{1}}={\mathit{C}}_{\mathbf{1}}^{\mathbf{2}},\mathit{k}\mathit{P}\mathit{a}$	${\mathit{C}}_{\mathbf{2}}^{\mathbf{1}}={\mathit{C}}_{\mathbf{2}}^{\mathbf{2}}$	${\mathit{C}}_{\mathbf{1}}^{\mathbf{3}},\mathit{k}\mathit{P}\mathit{a}$	${\mathit{C}}_{\mathbf{2}}^{\mathbf{3}}$	${\mathit{C}}_{\mathbf{1}}^{\mathbf{4}},\mathit{k}\mathit{P}\mathit{a}$	${\mathit{C}}_{\mathbf{2}}^{\mathbf{4}}$	${\mathit{\gamma }}^{°}$
15.3 (13–20)	14.99	12.61	0.57	25.78	0.00	18.57	0.00	45.29
24.4 (21–30)	13.99	13.89	0.83	31.74	0.00	15.60	0.23	41.80
36.0 (31–40)	11.71	11.17	1.45	22.29	0.16	8.00	1.41	38.41
46.5 (41–50)	14.32	9.56	2.72	24.75	0.19	14.48	2.00	38.41
54.9 (51–60)	15.60	9.26	5.35	28.53	0.37	12.69	4.80	37.83
66.5 (61–70)	13.94	9.66	6.87	29.03	0.39	16.24	5.38	40.70
73.2 (71–78)	12.67	6.87	14.86	25.63	1.19	13.88	11.86	39.55