Hormonal responses after a strength endurance resistance exercise protocol in young and elderly males
Deutscher übersetzter Titel: | Hormonelle Reaktionen bei jungen und älteren Männern nach einem auf die Kraftausdauer ausgerichteten Krafttrainingsprogramm |
---|---|
Autor: | Smilos, I.; Pilianidis, T.; Karamouzis, M.; Parlavantzas, A.; Tokmakidis, S.P. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 28 (2007), 5, S. 401-406, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2006-924366 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU200707001941 |
Quelle: | BISp |
Abstract
This study examined testosterone, cortisol and growth hormone responses in elderly and young men after a strength endurance protocol. Eight elderly (age: 69 ± 5 yrs) and nine young (age: 23 ± 1 yrs) males with recreational experience in resistance training performed a strength endurance protocol, which included six exercises. At each exercise, the subjects performed 3 sets of 15 reps at 60 % of 1-RM with a 90 s rest interval between sets. The subjects also participated in a control session. Hormonal and blood lactate concentrations were measured before exercise, immediately after exercise and 15 min after the end of exercise. Blood lactate increased (p < 0.05) with resistance exercise in both age groups with the highest increases observed in the young males. Testosterone and cortisol concentrations were higher (p < 0.05) immediately and 15 min after exercise as compared to the respective control session values in both young and elderly subjects, whereas no differences were observed between groups (p > 0.05). Growth hormone concentration increased (p < 0.05) after resistance exercise compared to the control session in both age groups. This increase was higher (p < 0.05) in the young as compared to the elderly group. The above results show that a moderate intensity - high repetition resistance exercise protocol for the improvement of strength endurance, seems to be a sufficient stimulus that increases testosterone, growth hormone and cortisol concentrations in elderly males. These hormonal responses may create an optimal metabolic environment, which improves muscular function after a strength endurance program although the elderly subjects present an attenuated growth hormone response compared to younger ones. Verf.-Referat