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March 1, 1989The Journal of PhysiologyOpen Access

Variation in the normalized tetanic force of single frog muscle fibres.

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Population

Single fibres isolated from the anterior tibialis muscle of the frog Rana temporaria

Design

Preclinical

Authors

GEG. ElzingaRoswell Park Comprehensive Cancer CenterJHJ. V. HowarthUniversity of BoltonJRJack A. RallThe Ohio State University

Discussion

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Implication

No clinical implications; leaves open whether diffusible modulators drive force variation in human striated muscle.

Structured PICO

P
Population
Single fibres isolated from the anterior tibialis muscle of the frog Rana temporaria
I
Intervention
Measurement of forces produced in maximal fixed-end tetani at sarcomere lengths of 2.2 microns and temperatures near 0 and 10 degrees C
O
Outcome
Normalized tetanic force (by cross-sectional area or dry weight per unit length)surrogate

The study demonstrates a twofold variation in normalized tetanic force in single frog muscle fibers, which correlates with energy liberation, suggesting modulation by diffusible substances.

Cite This Study

Elzinga et al. (1989) studied this question.

synapsesocial.com/papers/6a84b4320cb2ba000a3884eehttps://doi.org/10.1113/jphysiol.1989.sp017526
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Also Consider

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

  1. 1Effects of temperature on tension, tension‐dependent heat, and activation heat in twitches of frog skeletal muscle.1979 · 43 citations
  2. 2The velocity of unloaded shortening and its relation to sarcomere length and isometric force in vertebrate muscle fibres.1979 · 765 citations
  3. 3Isozyme specific modification of myosin ATPase by cAMP in rat heart.1987 · 32 citations
  4. 4Contractile properties of two varieties of twitch muscle fibres in Xenopus laevis1982 · 62 citations
  5. 5Myosin isoenzymes in single muscle fibres of Xenopus laevis : analysis of five different functional types1984 · 61 citations