Short communication. Sarcomere length changes during fish swimming.

R. L. Lieber*, R. Raab, S. Kashin, V. R. Edgerton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The interaction between actin and myosin represents the fundamental force-producing mechanism in all skeletal muscles. Interaction between analogous proteins also occurs within cells, resulting in movement of subcellular organelles. Although considerable detail is known about the muscle sarcomere length-tension relationship and how isometric force potential is a function of myofilament overlap (Gordon et al. 1966), there are no direct measurements of myofilament movement during locomotion. We have taken advantage of the transparent morphology of the glass catfish (Kryptopterus bicirri) to investigate noninvasively sarcomere length changes which occur during free swimming. NASA Edited

Original languageEnglish (US)
Pages (from-to)251-254
Number of pages4
JournalThe Journal of experimental biology
StatePublished - Aug 1992

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Aquatic Science
  • Animal Science and Zoology
  • Molecular Biology
  • Insect Science


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