Results 211 to 220 of about 268,386 (263)

Control of muscle contraction

Quarterly Reviews of Biophysics, 1969
As is well known, the memorable discovery of Galvani (1791) was followed by the development of two new fields of science, electrochemistry and electrophysiology. During the course of this development, the most remarkable feature of the original finding, i.e. ‘contraction of muscle induced by a piece of metal’, gradually came to be ignored.
S, Ebashi, M, Endo, I, Otsuki
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Considerations on muscle contraction

Journal of Electromyography and Kinesiology, 2002
The independent force generator and the power-stroke cross-bridge model have dominated the thinking on mechanisms of muscular contraction for nearly the past five decades. Here, we review the evolution of the cross-bridge theory from its origins as a two-state model to the current thinking of a multi-state mechanical model that is tightly coupled with ...
W, Herzog, R, Ait-Haddou
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Mechanism of muscle contraction

Technology and Health Care, 1993
This work is the first attempt to propose a complex model of muscle contraction in which different aspects of the sarcomere shortening are collected into a logical entity. Proposed are some suggestions to answer some fundamental questions concerning the molecular mechanism of muscle contraction, such as the following: “of which part of the myosin ...
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Mysteries of Muscle Contraction

Journal of Applied Biomechanics, 2008
According to the cross-bridge theory, the steady-state isometric force of a muscle is given by the amount of actin–myosin filament overlap. However, it has been known for more than half a century that steady-state forces depend crucially on contractile history. Here, we examine history-dependent steady-state force production in view of the cross-bridge
Walter, Herzog, Timothy R, Leonard, Venus, Joumaa, Ashi, Mehta   +3 more
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Theories of Muscle Contraction

Journal of Structural Biology, 1995
A survey of the mainstream theories in the modern study of the mechanism of muscle contraction is made, with particular emphasis placed on the experimental results which most influenced the progression of ideas. Starting with early elastic and viscoelastic theories of muscle contraction, a chronological organization is used to present, in detail, the ...
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Energy of Contraction in Muscle

Human Factors: The Journal of the Human Factors and Ergonomics Society, 1963
A large body of the present day theory of production and absorption of work and heat by the contracting muscle is inferred from the experimental study of excised amphibian muscle at 0°. The question arises as to how well the results apply to in situ human muscles.
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Toward a theory of muscle contraction

Journal of Bioenergetics, 1972
The general chemistry of muscle contraction was elucidated early on from test-tube reconstitutions of function:1, 2 Myosin and actin form an ATP-dissociable complex; myosin is an actin-modifiable ATPase, and the free energy of ATP hydrolysis “pays for” any work performed in contraction. The central structural feature of contraction was discovered later:
G, Viniegra-Gonzalez, M F, Morales
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Regulation of Muscle Contraction

1983
The discovery of troponin (Ebashi and Kodama, 1965; cf. Ebashi et al., 1969) established the concept of regulation in muscle contraction and the term regulatory proteins (Maruyama and Ebashi, 1970). The absence of troponin or other specific regulatory proteins in molluscan striated muscle (Kendrick-Jones et al., 1970) suggested that the mode of ...
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Structural Mechanism of Muscle Contraction

Annual Review of Biochemistry, 1999
▪ Abstract  X-ray crystallography shows the myosin cross-bridge to exist in two conformations, the beginning and end of the “power stroke.” A long lever-arm undergoes a 60° to 70° rotation between the two states. This rotation is coupled with changes in the active site (OPEN to CLOSED) and phosphate release.
Geeves, M., Holmes, K.
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Muscle Contraction and Fibrous Muscle Proteins

1952
Publisher Summary This chapter deals with the contraction of different kinds of muscle that show differences with respect to the amount of tension developed, the maximum shortening, the rate of shortening, and the fuel requirement. These differences not only reflect the varying levels of evolutionary development, but also a considerable adaptation to
H H, WEBER, H, PORTZEHL
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