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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Arch Biochem Biophys. 2012 Oct 27;535(1):3–13. doi: 10.1016/j.abb.2012.10.011

Figure 3.

Figure 3

Effect of increase in SL on contractile activation, as estimated by the percent increase in tension development (A), or the increase myofilament Ca2+ sensitivity (ΔpCa50, B). Estimates of myofilament Ca2+ sensitivity (pCa50) were determined by fitting Hill’s model to pCa-tension relationships. Values are mean + SEM. Number of determinants is 10 for each group. ** - p < 0.01; *** - p < 0.001, when comparing tension or pCa50 values at SL 2.0 μm vs. 2.2 μm within α-MHC or β-MHC fibers groups.