Table 3:

Comparison of fitted parameters with measurements of isolated myocytes and collagen fibers.

Description	Fitted model parameters	Reported Values
Cardiac muscle stiffness modulus	13.49 ± 1.92kPa*	Guinea pig:16.4 ± 11.0 kpa [42]; Hamster: 7.48 ± 1.73 kpa [30];
Cardiac muscle uniaxial stress	1.36 ± 0.28 kPa*	Guinea pig: 2.1 ± 1.4 kpa [42]; Hamster: 0.88 ± 0.48 kpa [30];
Collagen fiber stiffness C4	5.1 ± 1.7MPa	Skin: 0 ~ 50 MPa [43]
Collagen fiber mean tortuosity	1.116**	Canine: 1.01~1.2 [44]

^*Cardiac muscle stiffness and uniaxial stress were computed at 2.2 μm sarcomere length. Based on a resting sarcomere length of 1.9 μm, this translates at an engineering strain ϵ ≈ 0.158

^**The collagen fiber mean tortuosity was computed from the collagen fiber straightening strain m_c by $\sqrt{2m_c+1}$ where m_c = 0.12