Table 4:

Parameters for the four-fiber family constitutive model describing the response of human TAs in 7 age groups at the 25^th percentile. Coefficient of determination R² ≥ 0.99 for 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)	11.45	38.68	0.00	0.17	0.03	32.65	0.00	62.08
24.4 (21–30)	16.22	13.53	0.92	31.10	0.00	11.77	0.69	43.98
36.0 (31–40)	19.25	8.75	2.97	22.40	0.20	0.01	14.09	31.82
46.5 (41–50)	16.69	13.25	2.50	27.17	0.26	15.52	2.64	40.24
54.9 (51–60)	25.62	10.96	10.77	34.98	0.36	7.60	13.25	33.19
66.5 (61–70)	21.54	4.75	15.71	29.18	0.64	21.84	8.65	41.51
73.2 (71–78)	27.33	1.69	31.27	11.18	4.17	5.17	29.59	43.03