January 1, 1983The Japanese Journal of PhysiologyOpen Access

Dependence of shortening heat on sarcomere length in frog muscle and fiber bundles.

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Structured PICO

Population

Fiber bundles from frog semitendinosus muscles and whole muscles

Intervention

Variation of initial sarcomere length between 2.0 and 3.66 micron with rapid isovelocity release in a 3 sec tetanus at 0 degrees C

Comparator

Isometric control heat measured in the same tetanus

Outcome

Shortening heat (excess heat produced after release)surrogate

Shortening heat in frog muscle decreases linearly with increasing sarcomere length, indicating it is produced by the interaction of thick and thin filaments.

Discussion

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Implication

Animal data support filament-overlap energetics; leaves open translation to human cardiac muscle.

Cite This Study

Kometani et al. (1983) studied this question.

synapsesocial.com/papers/6a2084f4cd682a52c6f8a03e https://doi.org/10.2170/jjphysiol.33.895

View Full Paper

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Bookmark

Dependence of shortening heat on sarcomere length in frog muscle and fiber bundles.

Structured PICO

Discussion

Implication

Cite This Study

Dependence of shortening heat on sarcomere length in frog muscle and fiber bundles.

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Also Consider