Testosterone is a hormone that is responsible for many of the physical characteristics specific to adult males. It plays a key role in reproduction and the maintenance of bone and muscle strength. Il livello di testosterone aumenta significativamente durante lo sforzo e spesso permane alto ancora un'ora dopo la conclusione. Si verifica che in concomitanza del massimo picco di forma dell'atleta i livelli in genere sono più bassi, (cioè l'aumento è minore), segno di un adattamento allo stress indotto dall'allenamento. Testosterone is a hormone produced by the testicles and is responsible for the proper development of male sexual characteristics. Testosterone is also important for maintaining muscle bulk. TESTOSTÉRONE : PROPRIÉTÉS MÉDICINALES – La Testostérone est une hormone stéroïdienne extrêmement puissante pour son action sur l’énergie sexuelle et physique, la croissance globale, la musculation, lutter contre la fatigue chronique, le stress intense, les insomnies, les problèmes hormonaux et le manque de désir sexuel. Testosterone is the key male sex hormone, but is also important for women. It plays a crucial role in muscle growth, fat loss, and optimal health (). What causes androgen deficiency? Androgen deficiency can be caused by genetic disorders, medical problems, or damage to the testes or pituitary gland. Testosterone is the main male sex hormone, but females also have small amounts of it. It is a steroid hormone, produced in men’s testicles and women’s ovaries (). Développement de l'embryon. À la suite de la différenciation des gonades en testicules (différenciation induite par la protéine TDF codée par le gène SRY mais dont la formation est activée par l' antigène H-Y), la testostérone intervient au niveau embryonnaire pour induire une masculinisation des organes génitaux. Testosterone is the main sex hormone found in men. It controls male physical features. The testes (testicles) make testosterone. Women have testosterone too but in much smaller amounts than in men. Testosterone is used in men and boys to treat conditions caused by a lack of this hormone. Includes testosterone side effects, interactions and indications.