Matches in SemOpenAlex for { <https://semopenalex.org/work/W2412289563> ?p ?o ?g. }
Showing items 1 to 66 of
66
with 100 items per page.
- W2412289563 endingPage "62" @default.
- W2412289563 startingPage "1955" @default.
- W2412289563 abstract "Preload, which determines the initial muscle length, has proved to be a basic determinant of the muscle relaxation phase. The mechanical properties of the papillary muscle of Wistar rats (n = 20) were studied at different initial lengths (L): Lmax and 98 p. 100, 94 p. 100, 90 p. 100, 86 p. 100 and 82 p. 100 Lmax. In isometry, the relaxation phase was proportionally less sensitive to a reduction of preload than the contraction phase. When L decreased the peaks of maximal force derivative of the contraction phase (+dF.dt-1 max) and relaxation phase (-dF.dt-1 max) were linearly and significantly lowered at L = 94 p. 100 Lmax and L = 90 p. 100 Lmax respectively. Conversely, in isotonia the relaxation phase was much more sensitive to a reduction of preload than the contraction phase. On a muscle preloaded from 82 p. 100 Lmax to Lmax, the highest max Vr value (i.e. maximal speed of isotonic relaxation) was measured at Lmax, which is the apex of the Starling's isometric curve. When L decreased max Vr decreased linearly and significantly at 94 p. 100 Lmax. In contrast, the maximal speed of contraction (max Vc) increased between Lmax and 94 p. 100 Lmax, became maximal, then significantly decreased beyond 82 p. 100 Lmax. Thus, in the physiological range of the myocardium (Lmax - 85 p. 100 Lmax) the rat papillary muscle tended to maintain its maximal isotonic speed of contraction, or even to increase that speed, whereas the isometric contraction, isometric relaxation and isotonic relaxation phases were early and significantly depressed.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
- W2412289563 created "2016-06-24" @default.
- W2412289563 creator A5029187554 @default.
- W2412289563 creator A5034436745 @default.
- W2412289563 creator A5040076782 @default.
- W2412289563 creator A5079794318 @default.
- W2412289563 creator A5084867886 @default.
- W2412289563 creator A5089172138 @default.
- W2412289563 date "1987-12-01" @default.
- W2412289563 modified "2023-10-18" @default.
- W2412289563 title "[Influence of preload on myocardial relaxation in the rat]." @default.
- W2412289563 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/3130014" @default.
- W2412289563 hasPublicationYear "1987" @default.
- W2412289563 type Work @default.
- W2412289563 sameAs 2412289563 @default.
- W2412289563 citedByCount "0" @default.
- W2412289563 crossrefType "journal-article" @default.
- W2412289563 hasAuthorship W2412289563A5029187554 @default.
- W2412289563 hasAuthorship W2412289563A5034436745 @default.
- W2412289563 hasAuthorship W2412289563A5040076782 @default.
- W2412289563 hasAuthorship W2412289563A5079794318 @default.
- W2412289563 hasAuthorship W2412289563A5084867886 @default.
- W2412289563 hasAuthorship W2412289563A5089172138 @default.
- W2412289563 hasConcept C103486182 @default.
- W2412289563 hasConcept C105702510 @default.
- W2412289563 hasConcept C126322002 @default.
- W2412289563 hasConcept C134018914 @default.
- W2412289563 hasConcept C163415756 @default.
- W2412289563 hasConcept C178853913 @default.
- W2412289563 hasConcept C2776050358 @default.
- W2412289563 hasConcept C2777274916 @default.
- W2412289563 hasConcept C48277249 @default.
- W2412289563 hasConcept C71924100 @default.
- W2412289563 hasConcept C77056095 @default.
- W2412289563 hasConceptScore W2412289563C103486182 @default.
- W2412289563 hasConceptScore W2412289563C105702510 @default.
- W2412289563 hasConceptScore W2412289563C126322002 @default.
- W2412289563 hasConceptScore W2412289563C134018914 @default.
- W2412289563 hasConceptScore W2412289563C163415756 @default.
- W2412289563 hasConceptScore W2412289563C178853913 @default.
- W2412289563 hasConceptScore W2412289563C2776050358 @default.
- W2412289563 hasConceptScore W2412289563C2777274916 @default.
- W2412289563 hasConceptScore W2412289563C48277249 @default.
- W2412289563 hasConceptScore W2412289563C71924100 @default.
- W2412289563 hasConceptScore W2412289563C77056095 @default.
- W2412289563 hasIssue "13" @default.
- W2412289563 hasLocation W24122895631 @default.
- W2412289563 hasOpenAccess W2412289563 @default.
- W2412289563 hasPrimaryLocation W24122895631 @default.
- W2412289563 hasRelatedWork W1973315741 @default.
- W2412289563 hasRelatedWork W2047578338 @default.
- W2412289563 hasRelatedWork W2076003484 @default.
- W2412289563 hasRelatedWork W2121890844 @default.
- W2412289563 hasRelatedWork W2171169932 @default.
- W2412289563 hasRelatedWork W2400846407 @default.
- W2412289563 hasRelatedWork W2412289563 @default.
- W2412289563 hasRelatedWork W2414903771 @default.
- W2412289563 hasRelatedWork W2416888914 @default.
- W2412289563 hasRelatedWork W3140416140 @default.
- W2412289563 hasVolume "80" @default.
- W2412289563 isParatext "false" @default.
- W2412289563 isRetracted "false" @default.
- W2412289563 magId "2412289563" @default.
- W2412289563 workType "article" @default.