Population
Glycerinated rabbit psoas fibers
Comparison
Various calcium levels with 0, 10, 20, and 30 mM… vs Different concentrations of calcium and…
Design
Preclinical
Authors
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May alter myofilament calcium sensitivity interpretations; leaves open cardiac cross-bridge relevance in vivo.
In glycerinated rabbit psoas fibers, elevated phosphate decreases calcium sensitivity of force and stiffness, suggesting strongly attached crossbridges can exist in both force-producing and non-force-producing states.
Martyn et al. (1992) studied this question.
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