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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Muscle Res Cell Motil. 2014 Oct 7;35(0):267–278. doi: 10.1007/s10974-014-9390-0

Figure 3. Effect of [MgATP] on parameters of Eq. 1.

Figure 3

For T4 and PTU-fed populations, myocardial viscoelastic stiffness rose as [MgATP] was lowered as reflected by the reduction in magnitude A (A and B) and became increasingly elastic as reflected by the decrease in k (C and D). The rate of force redevelopment 2πb was reduced as [MgATP] was lowered among all populations (G and H), while 2πb was ~2-fold faster for α- vs. β-MyHC. Compared to other model parameters, the magnitudes B (E and F) and C (I and J) were relatively insensitive to [MgATP]. †P<0.01; *P<0.05 between experimental and control groups within a panel.