[Testicular secretions of androgens after prolonged physical effort in man].
Variations in plasma testosterone, dihydrotestosterone. delta 4 androstenedione, LH, FSH and cortisol were measured before and after 6 succesive effort tests in 11 male subjects. Testicular secretion and the extra-hepatic consumption of androgens are increased by the haemodynamic conditions of effort but plasma levels of testosterone and dihydrotestosterone fall with repeated effort, indicating a progressive imbalance between production and consumption. These variations suggest that the testis, rather than glucocorticoid function of the adrenal, might play a major limiting role, psychological and metabolic, in tolerance of prolonged effort.
D000328:Adult; D000728:Androgens / Q000097:blood / Q000378:metabolism*; D000735:Androstenedione / Q000378:metabolism; D013196:Dihydrotestosterone / Q000378:metabolism; D005640:Follicle Stimulating Hormone / Q000378:metabolism; D006439:Hemodynamics; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism; D007986:Luteinizing Hormone / Q000378:metabolism; D008297:Male; D005082:Physical Exertion; D012636:Secretory Rate; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000097:blood / Q000378:metabolism
D000728:Androgens; D013196:Dihydrotestosterone; D013739:Testosterone; D000735:Androstenedione; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D006854:Hydrocortisone
Sécrétion testiculaire d'androgènes après effort physique prolongé chex l'homme