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Figure 3 The force-frequency relationship (dP/dtmax vs. heart rate) is depicted in the control (squares) and hypertrophy (circles) groups. The dP/dtmax increases with each increment in heart rate, producing a positive force-frequency relationship in each group. At each level of heart rate the mean dP/dtmax is not significantly different and the slope of the force-frequency relationship remains unchanged between the two groups. Error bars represent standard error of mean.
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