Bouts of exercise elicit discordant testosterone: cortisol ratios in runners and non-runners
Arch. endocrinol. metab. (Online)
;
62(3): 325-331, May-June 2018. tab, graf
Artículo
en Inglés
| LILACS
| ID: biblio-950072
ABSTRACT
ABSTRACT Objective:
The testosteronecortisol ratio (TC) is suggested to be used in order to examine whether physical exercise generates either a "catabolic environment" or an "anabolic environment". The present study aims to evaluate the acute time-course profile of cortisol and testosterone due to an episode of physical exercise. A biphasic profile in the TC ratio response was hypothesized. Materials andmethods:
Morning sessions of treadmill running at two different intensities (Heart Rate at 65% and 80% of the maximum cardiac reserve) were performed by 6 male non-runners (NR) and 12 trained male runners (subdivided into trained runners T1 and T2). Cortisol and testosterone were measured in saliva. NR and T1 ran for 30 minutes at both intensities, and T2 ran for 46 minutes (± 4.1) at 65% and 42 minutes (± 3.5) at 80%.Results:
In the 80% heart rate target, both groups of runners showed the biphasic time-profile, while the non-runners group did not. However, at the 65% level, none of the groups presented the hypothesized biphasic response.Conclusions:
A biphasic time-profile in the testosteronecortisol ratio can be seen in short-bout, high intensity exercise (treadmill running) during the morning in men trained for this specific physical activity.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Carrera
/
Saliva
/
Testosterona
/
Hidrocortisona
/
Atletas
/
Frecuencia Cardíaca
Límite:
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Arch. endocrinol. metab. (Online)
Asunto de la revista:
Endocrinologia
/
Metabolismo
Año:
2018
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de São Paulo/BR
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