Abstract:
:Small, sinusoidal length changes were superimposed on isometric contractions of fast- and slow-twitch mouse muscles, which were stimulated maximally via their nerves. Stiffness increased with increasing frequency of sinusoidal stimulation, but the relative time course of force and stiffness changes during twitch, tetanic, or partially fused contractions was quite invariant over a range of frequencies in both muscles. Typically, stiffness increases more rapidly than force during contraction and decreases less rapidly during relaxation. This pattern was observed at various temperatures and with various numbers of stimuli. It can be described by a nonlinear relation between stiffness and force with some hysteresis. The presence in the muscle of parallel and series elastic elements, whose stiffness varies with force, may account for the nonlinear relation. This nonlinearity can be used to relate the patterns for summation of force and stiffness observed with brief trains of stimuli under a variety of conditions.
journal_name
Can J Physiol Pharmacoljournal_title
Canadian journal of physiology and pharmacologyauthors
Stein RB,Gordon Tdoi
10.1139/y86-209subject
Has Abstractpub_date
1986-09-01 00:00:00pages
1236-44issue
9eissn
0008-4212issn
1205-7541journal_volume
64pub_type
杂志文章abstract::Inactivation of endothelin B receptors (ETB), either through selective pharmacological antagonism or genetic mutation, increases the circulating concentration of endothelin-1 (ET-1), suggesting ETB plays an important role in clearance of this peptide. However, the cellular site of ETB-mediated clearance has not yet be...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:2010-06-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:1997-08-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章,评审
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更新日期:2015-09-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:1997-06-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章,评审
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journal_title:Canadian journal of physiology and pharmacology
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journal_title:Canadian journal of physiology and pharmacology
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journal_title:Canadian journal of physiology and pharmacology
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:1975-02-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1991-06-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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doi:10.1139/y75-033
更新日期:1975-04-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:1985-06-01 00:00:00
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更新日期:1990-07-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y92-273
更新日期:1992-01-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1990-03-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1988-10-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1988-08-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:1986-06-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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更新日期:2018-10-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
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doi:10.1139/cjpp-76-9-895
更新日期:1998-09-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:
更新日期:2000-08-01 00:00:00
abstract::Barbital-sedated, warm-acclimated (WA) or cold-acclimated (CA) rats were infused intravenously with noradrenaline (NA) at doses that elicited graded calorigenic responses. Blood flow (Q) to the various bodies of brown adipose tissue (BAT), the major sites of the NA-induced calorigenesis, was measured with labeled micr...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1980-08-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
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更新日期:1975-10-01 00:00:00
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journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章,评审
doi:10.1139/y91-037
更新日期:1991-02-01 00:00:00