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. 2013 Jun 4;104(11):2540–2552. doi: 10.1016/j.bpj.2013.04.045

Table 1.

Dependency of model parameters of Eq. 1 on ionic strength in MHC IIA fibers, and temperature, myofilament lattice compression, and hydration in MHC I fibers

Condition E (kPa) k tatt (ns)
175 mEq 4460 ± 784 0.227 ± 0.009 11.8 ± 0.5
110 mEq 6765 ± 230a 0.229 ± 0.004 11.7 ± 0.2
15°C 4223 ± 1134 0.151 ± 0.011 17.8 ± 0.9
25°C 5304 ± 1756 0.180 ± 0.013a 15.2 ± 1.2a
pre-T500 3467 ± 991 0.179 ± 0.011 15.0 ± 0.9
4% T500 9000 ± 2293a 0.207 ± 0.008a 13.0 ± 0.5a
pre-T10 3435 ± 1151 0.169 ± 0.023 16.1 ± 2.2
0.34% T10 3728 ± 1679 0.190 ± 0.007a 14.1 ± 0.5a

Assumed value for ϕ = 108 s−1. Data presented as mean ± SE (n = 4 for each case).

a

P < 0.05 by paired t-test against initial control condition.