Comparisons of serum testosterone and corticosterone between exercise training during normoxia and hypobaric hypoxia in rats
Deutscher übersetzter Titel: | Vergleiche an Ratten zwischen körperlichem Training unter normoxischen oder hypobar-hypoxischen Bedingungen hinsichtlich der Serumkonzentrationen von Testosteron und Corticosteron |
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Autor: | Hu, Y.; Asano, K.; Mizuno, K.; Usuki, S.; Kawakura, Y. |
Erschienen in: | European journal of applied physiology |
Veröffentlicht: | 78 (1998), 5, S. 417-421, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 1439-6319, 0301-5548 |
DOI: | 10.1007/s004210050440 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199810304642 |
Quelle: | BISp |
Abstract des Autors
The purpose of this study was to compare the effects of continuous and intermittent exercise training on serum testosterone [T] and corticosterone concentrations [Cort] during normoxia and hypobaric hypoxia. Male rats swam with loads of 3% (normoxia) or 2.25% (462 mmHg) body mass for 60 min in the continuous training groups, and 15 min separated by a 7-min rest x 4, with 60-min total exercise duration in the intermittent training groups, 5 days/week for 6 weeks. Serum [T] were measured at rest and following exercise after 6 weeks of training. Serum [Cort] were measured immediately after an acute period of exercise or after 6 weeks of training at rest and following exercise. Continuous exercise induced decreases in [T] under both conditions. Intermittent exercise showed a tendency to increase [T] during normoxia, but caused a suppression during hypobaric hypoxia. The [Cort] was elevated by a similar margin after an acute period of exercise during both conditions. After 6 weeks of training, however, [Cort] increased slightly after exercise during normoxia. A lower resting [Cort], which was increased after exercise, was found in the training groups during hypoxia. No relevant relationship was found between the behaviours of [T] and [Cort] after exercise during either conditions. Verf.-Referat