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  • muscle's
  • Skeletal muscle's remarkable property of elasticity and contractibility brings forth the ability for us to move around and interact with the world around us. (fromemuseum.org)
  • Tendon compliance may also reduce the cost of muscle contraction, by reducing a muscle's contractile velocity and length change for a given movement, as well as increasing the power output of muscle-tendon units that is key to rapid acceleration and jumping performance. (springer.com)
  • stimulation
  • 4. Reasons are given for believing that these changes in metabolism may be independent of the stimulation and inhibition of contraction which potassium simultaneously produces in these tissues. (rupress.org)
  • regulation
  • Genetic interaction studies suggest that failed regulation of the muscle calcium release channel, the ryanodine receptor, is the major defect underlying the Cam 7 phenotype. (genetics.org)
  • In fast-twitch rat muscle, this regulation of G M has two distinct phases. (rupress.org)
  • In particular, our study described the relative sensitivity of the different aspects of muscle excitability, including neuromuscular transmission, sarcolemmal AP propagation, and tubular (t)-system excitation, to such regulation. (rupress.org)
  • myocardium
  • As an example, the variation of isometric force with [Ca 2+ ] in permeabilized muscle preparations suggests the presence of cooperative processes in activation, which occur to differing degrees in myocardium and in fast- and slow-twitch skeletal muscles. (rupress.org)
  • Although current work involves both skeletal and cardiac muscles, the evolutionary elaboration of secondary regulatory processes is most evident in myocardium, in which the in vivo tuning of contraction varies considerably from beat to beat depending on circulatory load and sympathetic tone. (rupress.org)
  • stimulus
  • showed that the posttetanic potentiation of twitch force in skeletal muscles was associated with stimulus frequency-dependent phosphorylation of myosin regulatory light chain. (rupress.org)
  • The first part of the this experiment dealt with measuring the muscle twitch contraction in presence of a single electric stimulus of increasing intensity starting from 0 volts to 5 volts with 0.25 volt increments. (fromemuseum.org)
  • With each increment in stimulus intensity, the contractions were more powerful till 2.25 volts-after which any further increase in intensity had no corresponding increase in contraction. (fromemuseum.org)
  • The second part of the experiment investigated how the muscle contraction occurs in presence of multiple stimuli close in time to each other with constant 2 volt stimulus. (fromemuseum.org)
  • The purpose of this experiment is to examine response of the muscle by changing variables of strength and frequency of stimulus. (fromemuseum.org)
  • occurs
  • We find that charge 2 is promoted and Ca 2+ release inactivated when resting, well-polarized muscle cells are exposed to low extracellular [Ca 2+ ] and that the opposite occurs in high [Ca 2+ ]. (rupress.org)
  • metabolism
  • metabolism was rapidly arrested by freezing the muscles with a specially designed hammer apparatus, and the frozen muscles were chemically analyzed. (rupress.org)
  • Andres R, Cader G, Zierler KL (1956) The quantitatively minor role of carbohydrate in oxidative metabolism by skeletal muscle in intact man in the basal state. (springer.com)
  • contractile
  • Thus, external calcium plays a significant role in the formation of prolonged contractile responses, providing for longer-lasting maintenance of power in contracted muscles. (springer.com)
  • Altered clock gene expression and vascular smooth muscle diurnal contractile variations in type 2 diabetic db/db mice. (semanticscholar.org)
  • The central question is how force generation and movement in muscle contraction are associated with major conformational changes in contractile and regulatory proteins. (els.net)
  • Force depression following muscle shortening was investigated in cat soleus (n'6) at 373C for a variety of contractile conditions with the aim to test the hypotheses that force depression was independent of the speed of shortening and was directly related to the mechanical work produced by the muscle during shortening. (scribd.com)
  • We routinely use this method to identify genetic components that alter the contractile property of skeletal muscle though modulating Ca 2+ signaling pathways. (jove.com)
  • temporal
  • This power enhancement requires a temporal decoupling of muscle work to stretch the tendon from the subsequent more rapid release of elastic strain energy from the tendon. (springer.com)
  • contractility
  • p63RhoGEF couples Gα(q/11)-mediated signaling to Ca2+ sensitization of vascular smooth muscle contractility. (semanticscholar.org)
  • Described here is a method to measure contractility of isolated skeletal muscles. (jove.com)
  • Here, we describe a newly identified skeletal muscle phenotype, i.e. , mechanic alternans, as an example of the various and rich information that can be obtained using the in vitro muscle contractility assay. (jove.com)
  • structural
  • Synchrotron X‐rays with high brilliance are an indispensable tool for muscle structural research. (els.net)