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Titolo:
The rat suspension model is also a good tool for inducing muscle hyperactivity
Autore:
Allaf, O; Goubel, F;
Indirizzi:
Univ Technol, CNRS, UMR 6600, F-60205 Compiegne, France Univ Technol Compiegne France F-60205 MR 6600, F-60205 Compiegne, France
Titolo Testata:
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
fascicolo: 3, volume: 437, anno: 1999,
pagine: 504 - 507
SICI:
0031-6768(199902)437:3<504:TRSMIA>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Keywords:
fast-twitch muscle; force-velocity relationship; muscle adaptation; muscle hyperactivity; muscle mechanics; tail suspension;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Goubel, F Univ Technol, CNRS, UMR 6600, BP 20529, F-60205 Compiegne, France Univ Technol BP 20529 Compiegne France F-60205 ompiegne, France
Citazione:
O. Allaf e F. Goubel, "The rat suspension model is also a good tool for inducing muscle hyperactivity", PFLUG ARCH, 437(3), 1999, pp. 504-507

Abstract

The aim of the present study was to investigate changes in the mechanical characteristics of the rat epitrochlearis muscle as a result of a period ofhyperactivity. A tail suspension model was used to impose postural activity in the forelimb musculature with the intention of inducing a relative slowness in the fast epitrochlearis muscle. A method of dual-controlled releases was used to obtain force-velocity and tension-extension relationships characterizing muscle mechanics. Results showed that: (1) mechanical characteristics are that of a fast-twitch muscle and (2) suspension induces a decrease in the maximal shortening velocity and a decrease in the compliance of series elastic elements. Changes in fibre type proportions are consistent with these mechanical adaptations. This demonstrates that an usual model of muscle hypoactivity can also be used for imposing hyperactivity of a postural nature, inducing muscle transformations towards a slower twitch muscle.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 04:20:18