Population
Frog sartorius muscle
Comparison
Isometric twitch vs Resting state
Design
Preclinical
Authors
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No immediate clinical implications; leaves open whether myosin timing translates to human cardiac muscle.
Time-resolved X-ray diffraction reveals that early in the rising phase of twitch tension, myosin projections move radially from thick to thin filaments, reaching numbers comparable to maximum isometric tetanus.
Matsubara et al. (1978) studied this question.
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