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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: J Mol Cell Cardiol. 2013 Jan 8;57:23–31. doi: 10.1016/j.yjmcc.2012.12.022

Figure 2.

Figure 2

Velocity- and power-tension relationships. A. Shortening velocity in the F764L/+ myocardial strips was significantly lower at several loads compared to +/+, while maximum velocity near unloaded conditions was similar between F764L/+ and +/+. There were no differences between S532P/+ and +/+. B. Power normalized to maximum isometric tension was also significantly lower in F764L/+ at specific loads, but was similar between S532P/+ and controls. Curves represent fit of Equation 1 to mean values. *P<0.05, **P<0.01 compared to +/+ controls by S-N-K. n = number of hearts, two strips per heart.