Table 1.

Parameter symbols, references, and values

Parameter	Symbol	Value (fit/ref.)
Mesh/fluid drag	$\mathrm{\Gamma }$	0.4 mPa⋅s/μm2 (Fit)
E4 myocardium modulus	$E^{\ast }$	1.6 kPa (10)
ECM Poisson ratio	ν	0.4 (26)
Fluid fraction (average)	ϕ	0.8 (50, 51)
Fluid viscosity (water, 25 °C)	η	0.89 mPa⋅s
CM spacing	$\mathrm{\Delta }x$	10 μm (10)
CM modulus	$E^c$	0.75 kPa (fit)
CM eigenstrain magnitude	${\mathit{ϵ}}^{\ast }$	0.2 (6)
CM strain threshold	α	0.11 (fit)
CM Poisson ratio	${\nu }^c$	0.4 (26)
Contraction time (AP duration)	τ	250 ms