Variation in the isometric maintenance heat rate with muscle length near that of maximum tension in frog striated muscle

The Journal of Physiology
X Aubert, S H Gilbert

Abstract

1. Tension and heat rate were measured as a function of muscle length in the range 0.75--1.25 lO in 10-sec isometric tetani in frog striated muscle at 0 degrees C in seven experiments. lO was defined as the length at which maximal tension was developed. 2. The length at which the stable maintenance heat rate (hB) was maximal was 7--16% lO shorter than the length at which tension was maximal (Pmax). 3. The range of hB at the length at which tension was maximal was 0.82-0.97 times the maximum value of hB. 4. For equal values of tension of 0.9 Pmax on each side of lO, hB was almost 40% greater at the shorter muscle length. 5. The results show that h(B) varies considerably with muscle length near lO, where tension varies little, and imply that tension is not the sole determinant of energy liberation in this little region.

Citations

Aug 1, 1988·Pflügers Archiv : European journal of physiology·P Cerretelli, P E di Prampero
Nov 25, 2004·Progress in Biophysics and Molecular Biology·Nicholas P SmithDenis S Loiselle
Oct 5, 2010·Journal of Molecular and Cellular Cardiology·Moran Yadid, Amir Landesberg
Nov 19, 2002·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Kenneth Meijer
Aug 11, 2007·Muscle & Nerve·Samuel C K LeeStuart A Binder-Macleod
Jul 15, 2016·The Journal of Physiological Sciences : JPS·Kazuhiro Yamada
Apr 1, 1986·Journal of Muscle Research and Cell Motility·S H Gilbert
Feb 1, 1986·Journal of Muscle Research and Cell Motility·S H Gilbert, L E Ford

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