Am J Physiol Cell Physiol Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Cell Physiol 237: C38-C42, 1979;
0363-6143/79 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lambert, C. R.
Right arrow Articles by Stainsby, W. N.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lambert, C. R.
Right arrow Articles by Stainsby, W. N.

AJP - Cell Physiology, Vol 237, Issue 1 38-C42, Copyright © 1979 by American Physiological Society

ARTICLES

Length-dependent activation of in situ canine skeletal muscle

C. R. Lambert, L. B. Gladden and W. N. Stainsby

This study was designed to assess the contribution of length-dependent activation to the peak isometric twitch tension developed and the maximal rate of tension development (dP/dt) of in situ canine skeletal muscle. Length-developed tension and length-dP/dt relationships were generated for the dog gastrocnemius-plantaris muscle group at three different levels of inotropic state as determined by stimulation frequency. These relationships were then normalized with respect to maximal developed tension and maximal dP/dt and the normalized curves were superimposed for comparison. At progressively shorter muscle lengths the augmentation of tension production by a given increment in inotropic state was greater as measured by either developed tension or dP/dt. Thus, a given change in muscle length produced a greater change in performance in less potentiated muscles. These findings are similar to those from studies of isolated cardiac muscle and illustrate the lack of independence between activational state and muscle length for in situ skeletal muscle.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
D. E. Rassier, B. R. MacIntosh, and W. Herzog
Length dependence of active force production in skeletal muscle
J Appl Physiol, May 1, 1999; 86(5): 1445 - 1457.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online