Effects of low-volume resistive exercise on beta-endorphin and cortisol concentrations
Deutscher übersetzter Titel: | Auswirkungen von maessig intensivem Krafttraining auf die Konzentrationen von beta-Endorphin und Kortisol |
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Autor: | Kraemer, R.R.; Acevedo, E.O.; Dzewaltowski, D.; Kilgore, J.L.; Kraemer, G.R.; Castracane, V.D. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 17 (1996), 1, S. 12-16, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-972801 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199602105695 |
Quelle: | BISp |
Abstract des Autors
It has been recently suggested that high and sustained lactate levels may elicit increases in peripheral B-EN concentrations. We have observed elevated and sustained lactate concentrations in response to a low-volume resistive exercise protocol that were similar to those from other exercise protocols that produced elevated beta-endorphin (B-EN) concentrations. Thus, the purpose of the study was to determine the effects of a low-volume (21,700 J) resistive exercise repetition maximum (RM) protocol using weight machines on peripheral lactate, B-EN and cortisol concentrations. Subjects completed 3 sets of bench press, lat-pull, leg extension, and leg curl exercise at a 10-RM load. Blood samples were collected and rating of perceived exertion (RPE, 15-point Borg scale) was assessed before exercise (- 40 and - 10 min), after each exercise, and after the exercise session (+ 35 min); blood samples were collected at 7 additional post-exercise times. RPE increased significantly throughout the exercise. Lactate concentrations rose significantly to peak at 8.54 mM at LE. B-EN and cortisol concentrations were not significantly elevated over time. The data suggest that a low-volume resistive exercise protocol using weight machines elevates lactate concentrations without altering B-EN and cortisol concentrations. Verf.-Referat