Proof of the effect of testosterone on skeletal muscle.
J Endocrinol
; 170(1): 27-38, 2001 Jul.
Article
en En
| MEDLINE
| ID: mdl-11431134
In spite of the widespread abuse of androgenic steroids by athletes and recreational body-builders, the effects of these agents on athletic performance and physical function remain poorly understood. Experimentally induced androgen deficiency is associated with a loss of fat-free mass; conversely, physiologic testosterone replacement of healthy, androgen-deficient men increases fat-free mass and muscle protein synthesis. Testosterone supplementation of HIV-infected men with low testosterone levels and of older men with normally low testosterone concentrations also increases muscle mass. However, we do not know whether physiologic testosterone replacement can improve physical function and health-related quality of life, and reduce the risk of falls and disability in older men or those with chronic illness. Testosterone increases maximal voluntary strength in a dose-dependent manner and thus might improve performance in power-lifting events. However, testosterone has not been shown to improve performance in endurance events. The mechanisms by which testosterone increases muscle mass are not known, but probably involve alterations in the expression of multiple muscle growth regulators.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Testosterona
/
Músculo Esquelético
/
Trastornos Relacionados con Sustancias
/
Doping en los Deportes
Tipo de estudio:
Clinical_trials
Aspecto:
Patient_preference
Límite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Endocrinol
Año:
2001
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Reino Unido