Length and PKA Dependence of Force Generation and Loaded Shortening in Porcine Cardiac Myocytes

Figure 6

Normalized force-velocity and power-load curves from a pig left ventricular myocyte preparation before and after PKA treatment during half-maximal Ca²⁺ activations. Pig cardiac myocyte preparations exhibited more power after PKA treatment. Inset shows bar plot (mean ± SD) of peak normalized power output before and after PKA (𝑛=10 myocyte preparations).