Table 3.

SHR model parameters (mean ± SE) obtained from the data fitting process with $\mathit{\psi }\left[0^{\circ },{10}^{\circ }\right]$

Group	$(1-\mathit{\varphi })\mathit{\mu }(\mathrm{kPa})$	${}^{(\ast \mathrm{a},\ast \mathrm{i},\ast \mathrm{ai})}\mathit{\varphi }E(\mathrm{MPa})$	${}^{(\ast \mathrm{ai})}{\mathit{\theta }}_o{(}^{\circ })$	${}^{(\ast \mathrm{ai})}\mathit{\psi }{(}^{\mathrm{o}})$	$R^2$
Mature
Ctl	$0.01\pm 0.001$	$217.74\pm 32.33$	$27.1\pm 2.6$	$7.5\pm 0.6$	$0.892\pm 0.028$
3 weeks	$0.09\pm 0.04$	$11.12\pm 5.26$	$10.6\pm 3.9$	$3.3\pm 1.0$	$0.842\pm 0.014$
6 weeks	$1.13\pm 0.76$	$52.88\pm 16.08$	$12.9\pm 3.9$	$3.4\pm 0.8$	$0.855\pm 0.015$
Aging
Ctl	$0.13\pm 0.06$	$32.71\pm 12.81$	$10.7\pm 3.5$	$2.9\pm 0.6$	$0.852\pm 0.018$
3 weeks	$0.05\pm 0.02$	$67.15\pm 9.74$	$25.5\pm 3.0$	$5.5\pm 0.6$	$0.868\pm 0.015$
6 weeks	$0.03\pm 0.01$	$41.75\pm 11.12$	$16.8\pm 4.1$	$4.2\pm 0.7$	$0.850\pm 0.011$
Aged
Ctl	$0.08\pm 0.06$	$63.05\pm 16.43$	$16.7\pm 3.5$	$3.7\pm 0.6$	$0.834\pm 0.015$
3 weeks	$0.14\pm 0.05$	$12.46\pm 6.38$	$7.6\pm 3.7$	$3.3\pm 1.2$	$0.800\pm 0.022$
6 weeks	$0.24\pm 0.22$	$54.75\pm 21.34$	$10.7\pm 3.7$	$3.4\pm 1.0$	$0.862\pm 0.019$

${}^{\ast \mathrm{a}}$Significance with age ($p<0.05$); ${}^{\ast \mathrm{i}}$significance with injury ($p<0.05$); ${}^{\ast \mathrm{ai}}$significant age–injury interaction ($p<0.05$)