Effect of prolonged exercise on insulin level in the portal and peripheral venous circulation in rats
Deutscher übersetzter Titel: | Auswirkung von Ausdauerbelastung auf die Insulinkonzentration im portalen und peripheren venoesen Kreislauf bei Ratten |
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Autor: | Cardin, S.; Doiron, B.; Lavoie, J.-M. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 12 (1991), 2, S. 187-189, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-1024665 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199203049478 |
Quelle: | BISp |
Abstract
The purpose of the present study was to compare the plasma insulin levels in portal and peripheral veins in rats submitted to a prolonged exercise to exhaustion (X+/-SE: 67+/-7 Min). Plasma insulin levels were reduced significantly (p<0.01) during exercise in both the portal and peripheral venous circulation. The reduction was, however, more pronounced in the portal than in the peripheral vein (x:-113 vs -64 and -162 vs -88 pmol/l after 30 and 45 min of exercise, respectively), indicating that exercise reduced not only insulin secretion but also its removal. Accordingly, no significant differences were found for the portal/peripheral ratio of insulin at rest and during the first 45 min of exercise (1.86+/-0.2, 1.76+/-0.1, and 1.57+/-0.2 at rest, and after 30 and 45 min of exercise, respectively). This suggests that insulin removal during exercise is regulated in proportion to portal insulin concentrations. Verf.-Referat