Muscle Activation: Effects of Small Length Changes on Calcium Release in Single Fibers
- 12 September 1975
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 189 (4206) , 881-884
- https://doi.org/10.1126/science.1154025
Abstract
In single muscle fibers, small (1 percent) changes of length have a marked effect of both the calcium activation and the tension elicited by a constant current stimulus. The decrease in tension with shortening is accounted for almost entirely by a decrease in calcium release, rather than by changes in mechanical factors, such as filament geometry.Keywords
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