Facteurs de la variation de la frequence cardiaque maximale : hypothese "enkephalinique"
Gespeichert in:
| Deutscher übersetzter Titel: | Faktoren der Veränderlichkeit der maximalen Herzfrequenz : die "Enkephalin-Hypothese" |
|---|---|
| Autor: | Semmoum, Y.; Younes, A.; Coudert, J. |
| Erschienen in: | Science & sports |
| Veröffentlicht: | 13 (1998), 6, S. 272-274, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Französisch |
| ISSN: | 0765-1597, 1778-4131 |
| DOI: | 10.1016/S0765-1597(99)80004-5 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU199901306491 |
| Quelle: | BISp |
Abstract des Autors
To try to explain the decrease in maximal heart rate under different situations (ie, chronic hypoxia, ageing, proteino-energetic malnutrition), cardiac concentration and flow of leucine-encephalin peptide in isolated and perfused hearts were studied in rats. The heart leucine-encephalin concentration which was 301+/-60 fmol/g before perfusion, increased up to 543+/-125 fmol/g after perfusion (1 h). The total release during perfusion was four times the initial concentration. Concerning the antagonism of leucine-encephalin on cardiotropic adrenergic effects on isolated cardiomyocytes, it is possible to propose this mechanism to explain totally or partially the decrease in maximal heart rate under particular situations. Verf.-Referat