Epimüsküler baǧlantili kasta yüksek boyda önceki aktivite kas kuvvetini azaltan önemli uzama geçmişi etkilerine yol açmaktadir

Translated title of the contribution: In epimuscularly connected muscle previous activity at high length yields sizable history effects causing decreased muscle force at low lengths

Filiz Ateş, Peter A. Huijing, Can A. Yücesoy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

History effects are the changes in isometric forces of muscles previously activated at high length. The aim of our study was to investigate determinants of history effects in the context of epimuscular myofascial force transmission. Isometric forces of maximally active extensor digitorum longus (EDL) muscle, as well as tibialis anterior and extensor hallicus longus muscle complex (TA+EHL) of the rat were measured simultaneously. (i) length-force (l-f) data were collected and (ii) control measurements were performed at EDL optimum (higher) length and ii) at reference (lower) length. Between consecutive contractions muscles were allowed to recover for 2 min. History effects were quantified as Fl-f - Fcontrol for the indicated lengths. 4 conditions were studied: (1) in the intact condition, during extensor digitorum longus (EDL) lengthening, at low length of EDL, history effects were 45.49%. However, no significant effects were shown for the forces at high length of EDL and restrained TA+EHL. (2) Second control measurements taken 15 minutes after first ones showed that extra time increased the history effects (i.e. EDL proximal force decrease increased from 41.53% to 55.69%). (3) After simultaneous lengthening of EDL and TA+EHL history effects decreased by 42.12% (4) History effects decreased to %34.92 after blunt dissection and 29.56% after fasciotomy. Our study showed that history effect is a fundamental phenomenon determined by intrinsic muscle properties and epimuscular connections may change this effect.

Translated title of the contributionIn epimuscularly connected muscle previous activity at high length yields sizable history effects causing decreased muscle force at low lengths
Original languageTurkish
Title of host publicationProceedings of 2009 14th National Biomedical Engineering Meeting, BIYOMUT 2009
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 14th National Biomedical Engineering Meeting, BIYOMUT 2009 - Balcova, Izmir, Turkey
Duration: 2009 May 202009 May 22

Other

Other
CountryTurkey
CityBalcova, Izmir
Period09/5/2009/5/22

Keywords

  • EDL muscle
  • History effects
  • Isometric force
  • TA+EHL muscle complex

ASJC Scopus subject areas

  • Biomedical Engineering
  • Pharmacology (medical)
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'In epimuscularly connected muscle previous activity at high length yields sizable history effects causing decreased muscle force at low lengths'. Together they form a unique fingerprint.

  • Cite this

    Ateş, F., Huijing, P. A., & Yücesoy, C. A. (2009). Epimüsküler baǧlantili kasta yüksek boyda önceki aktivite kas kuvvetini azaltan önemli uzama geçmişi etkilerine yol açmaktadir. In Proceedings of 2009 14th National Biomedical Engineering Meeting, BIYOMUT 2009 [5130297] https://doi.org/10.1109/BIYOMUT.2009.5130297