Key result
Increasing resting tension from 0.5 to 4.5 g in isolated cat papillary muscles increased the intercept and decreased the slope of the linear stiffness-tension relationship during contraction.
In isolated cat papillary muscles, increasing resting tension alters the linear stiffness-tension relationship during contraction, increasing the intercept and decreasing the slope.
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Hypothesis-generating in isolated feline muscle; does not support clinical changes in myocardial assessment or therapy.
Templeton et al. (1976) studied this question. Changes in resting tension was evaluated on Stiffness (deltaT/deltaL) and its elastic and viscous components. Increasing resting tension from 0.5 to 4.5 g in isolated cat papillary muscles increased the intercept and decreased the slope of the linear stiffness-tension relationship during contraction.
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