Cortisol and testosterone in exercise at the onset of puberty in boys
Gespeichert in:
| Deutscher übersetzter Titel: | Kortison und Testosteron beim Training zu Beginn der Pubertät bei Jungen |
|---|---|
| Autor: | Viru, Atko; Karelson, Kalle; Kuusler, Kai; Janson, Tamara; Viru, Mehis |
| Erschienen in: | Research in sports medicine |
| Veröffentlicht: | 12 (2004), 3, S. 201-207, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Englisch |
| ISSN: | 1543-8627, 1543-8635 |
| DOI: | 10.1080/15438620490497512 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU200508001932 |
| Quelle: | BISp |
Abstract des Autors
Previous studies have failed to demonstrate that aerobic exercises increase the adrenocortical activity in prepubescent boys. The purpose of the present study was to check this fact using a longitudinal approach. Two cohorts of boys participated in a one-year follow-up. The first cohort consisted of 14 boys at sexual maturation stage 1 (age 10 to 11 years) and the second cohort of 5 boys at stage 2 (age 12 years) at the onset of the observation. Boys performed 20-min aerobic exercise on a cycle ergometer at the beginning and end of the year of observation. Before and 5 min after the exercise, blood cortisol and testosterone were determined by radioimmunoassays. Before the onset of puberty (stage 1) cortisol increase during exercise was found in only 25% of boys. Exercise induced significant increase of cortisol level after achieving sexual maturation stage 2. Testosterone response was insignificant at the first three stages of sexual maturation. Verf.-Referat