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September 1, 1976The Journal of General PhysiologyOpen Access

Sarcomere lengthening and tension drop in the latent period of isolated frog skeletal muscle fibers.

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Population

Isolated frog skeletal muscle fibers

Design

Preclinical

Authors

PHP. HaugenDantec Dynamics (Denmark)OSO. Sten‐KnudsenUniversity of Copenhagen

Discussion

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Implication

Supports filament-overlap dependence of latency relaxation in amphibian skeletal muscle; leaves open relevance to mammalian cardiac sarcomere function.

Structured PICO

P
Population
Isolated frog skeletal muscle fibers
I
Intervention
Laser diffraction technique to register small changes in sarcomere length during the latent period of contraction
O
Outcome
Sarcomere lengthening (latency elongation) and tension drop in the latent periodsurrogate

A laser diffraction technique revealed that latency elongation in frog skeletal muscle fibers is a forcible lengthening process dependent on thin and thick filament overlap.

Cite This Study

Haugen et al. (1976) studied this question.

synapsesocial.com/papers/6a86da69c7caab105a154834https://doi.org/10.1085/jgp.68.3.247
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The Intracellular Site of Calcium Activation of Contraction in Frog Skeletal Muscle1970 · 201 citations
  2. 2X-Ray Evidence for a Conformational Change in the Actin-containing Filaments of Vertebrate Striated Muscle1973 · 394 citations
  3. 3The Dependence of Tension Relaxation in Skeletal Muscle on the Number of Sarcomeres in Series1976 · 7 citations
  4. 4Changes in sarcomere length during isometric tension development in frog skeletal muscle1972 · 176 citations
  5. 5The dependence of the latency relaxation on sarcomere length and other characteristics of isolated muscle fibres1972 · 40 citations