Slik HITman fremstiller det skulle en nesten tro det var så betydningsfullt at enhver dopet utøver har vanvittige skuldre og traps - hvilket de åpenbart ikke har liksom......
Det var i så fall ikke meningen å fremstille det slik. Selv om skulderpartiene hos et stort antall utøvere
i gjennomsnitt har større tetthet av androgenreseptorer enn f. eks. beina, er det selvfølgelig store individuelle forskjeller fra person til person.
Her er en interessant studie som ikke bare bekrefter dette med ulik tetthet av androgenreseptorer i trapezius sammenlignet med lårmuskulatur, men også viser at tettheten av androgenreseptorer i trapezius faktisk kan
øke på AAS, mens tilsvarende ikke er tilfelle for lårmuskulatur:
Histochem Cell Biol. 2000 Jan;113(1):25-9. Related Articles, Links
The expression of androgen receptors in human neck and limb muscles: effects of training and self-administration of androgenic-anabolic steroids.
Kadi F, Bonnerud P, Eriksson A, Thornell LE.
Department of Integrative Medical Biology, Section for Anatomy, Umea University, 901 87, Umea, Sweden.
fawzi.kadi@anatomy.umu.seThe purpose of this study was to investigate the immunohistochemical expression of androgen receptors (AR) in human vastus lateralis and trapezius muscles and to determine whether long-term strength training and self-administration of androgenic-anabolic steroids are accompanied by changes in AR content. Biopsy samples were taken from eight high-level power-lifters (P), nine high-level power-lifters who used anabolic steroids (PAS) and six untrained subjects (U). Myonuclei and AR were visualised in cross-sections stained with the monoclonal antibody against AR and 4',6-diamidino-2-phenylindole.
The proportion of AR-containing myonuclei per fibre cross-section was higher in the trapezius than in the vastus lateralis (P<0.05). In the trapezius, the proportion of AR-containing myonuclei was higher in P compared to U and in PAS compared to both P and U (P<0. 05). On the contrary, in the vastus lateralis, there were no differences in AR content between the three groups. Myonuclear number in both muscles was higher in P compared to U and in PAS compared to both P and U (P<0.05).
In conclusion, AR content differs greatly between human neck and limb muscles. Moreover, the regulation of AR-containing myonuclei following training and self-administration of androgenic-anabolic steroids is muscle dependent.H