Abstract 12

Subject characteristics and concentrations of male sex hormones and biochemical markers of thyroid function at time of testing

AAS Using-on (n=8)AAS Using-off (n=7)Bodybuilder controls (n=8)Sedentary controls (n=9)Normal range
Values are mean (SD).
*p<0.05, **p<0.01 compared with controls.
†Significantly lower (p<0.05) than BC and SC but not SU.
N/A, Not applicable; AAS, anabolic androgenic steroid; SHBG, sex hormone binding globulin; TSH, thyrotrophin; T4, thyroxine.
Group IDSUSABCSC
Length of AAS use (years)19 (2.3)20 (2.5)N/AN/A
Body mass index (kg/m2)34.4 (2.7)**34.7 (3.7)**28.3 (2.0)27.1 (2.9)
Testosterone (nmol/l)57.4 (21)*19.6 (4.9)16.3 (5.7)14.3 (3.6)8–30
SHBG (nmol/l)4.3 (2)**12.5 (7.5)†23.7 (8.9)26 (15.2)15–100
TSH (mU/l)2.1 (0.8)3.4 (1.0)2.3 (1.2)3.7 (1.1)0.35–5
T4 (nmol/l)83 (14)76 (19)74 (17)88 (20)55–144