Harman SM, Metter EJ, Tobin JD, Pearson J, Blackman MR. Longitudinal effects of aging on serum total and free testosterone levels in healthy men. J Clin Endocrinol Metab 2001; 86: 724–731.
Google Scholar
Feldman HA, Longcope C, Derby CA, et al. Age trends in the level of serum testosterone and other hormones in middle-aged men: Longitudinal results from the Massachusetts Male Aging Study. J Clin Endocrinol Metab 2002; 87: 589–598.
Google Scholar
Svartberg J, Midtby M, Bønaa KH, Sundsfjord J, Joakimsen M, Jorde R. The associations of age, life-style factors and chronic disease with testosterone in men. The Tromsø Study. Eur J Endocrinol 2003; 149: 145–152.
Google Scholar
Vermeulen A, Goemaere S, Kaufman JM. Testosterone, body composition and aging. J Endocrinol Invest 1999; 22: 110–116.
Google Scholar
Lahti-Koski M, Pietinen P, MännistöS, Vartiainen E. Trends in waist-to-hip ratio and its determinants in adults in Finland from 1987 to 1997. Am J Clin Nutr 2000; 72: 1436–1444.
Google Scholar
Larsson B, Svärdsudd K, Welin L, Wilhelmsen L, Björntorp P, Tibblin G. Abdominal adipose tissue distribution, obesity, and risk of cardiovascular disease and death: 13 year follow up of participants in the study of men born in 1913. Br Med J 1984; 288: 1401–1404.
Google Scholar
Björntorp P. Male fat distribution and cardiovascular risk. Blood Press Suppl 1992; 4: 17–19.
Google Scholar
Barrett-Connor E. Testosterone and risk factors for cardiovascular disease in men. Diabete Metab 1995; 21: 156–161.
Google Scholar
Zmuda JM, Cauley JA, Kriska A, Glynn NW, Gutai JP, Kuller LH. Longitudinal relation between endogenous testosterone and cardiovascular disease risk factors in middle-aged men. A 13-year follow-up of former Multiple Risk Factor Intervention Trial participants. Am J Epidemiol 1997; 146: 609–617.
Google Scholar
Hak AE, Witteman JC, de Jong FH, Geerlings MI, Hofman A, Pols HA. Low levels of endogenous androgens increase the risk of atherosclerosis in elderly men: The Rotterdam Study. J Clin Endocrinol Metab 2002; 87: 3632–3639.
Google Scholar
Seidell JC, Björntorp P, Sjöström L, Kvist H, Sannerstedt R. Visceral fat accumulation in men is positively associated with insulin, glucose and c-peptide levels, but negatively with testosterone levels. Metabolism 1990; 39: 897–901.
Google Scholar
Pasquali R, Casimirri F, Cantebelli S, et al. Effect of obesity and body fat distribution on sex hormones and insulin in men. Metabolism 1991; 40: 101–104.
Google Scholar
Tchernof A, Despres JP, Belanger A, et al. Reduced testosterone and adrenal C19 steroid levels in obese men. Metabolism 1995; 44: 513–519.
Google Scholar
Couillard C, Gagnon J, Bergeron J, et al. Contribution of body fatness and adipose tissue distribution to the age variation in plasma steroid hormone concentrations in men: The HERITAGE Family Study. J Clin Endocrinol Metab 2000; 85: 1026–1031.
Google Scholar
Abate N, Haffner SM, Garg A, Peshock RM, Grundy SM. Sex steroid hormones, upper body obesity, and insulin resistance.J Clin Endocrinol Metab 2002; 87: 4522–4527.
Google Scholar
Haffner SM, Valdez RA, Stern MP, Katz MS. Obesity, body fat distribution and sex hormones in men. Int J Obes Relat Metab Disord 1993; 17: 643–649.
Google Scholar
Khaw KT, Barrett-Connor E. Lower endogenous androgens predict central adiposity in men. Ann Epidemiol 1992; 2: 675–682.
Google Scholar
Lean MEJ, Han TS, Morrison CE. Waist circumference as a measure for indicating need for weight management. BMJ 1995; 311: 158–161.
Google Scholar
Vermeulen A, Verdonck L, Kaufman JM. A critical evaluation of simple methods for the estimation of free testosterone in serum. J Clin Endocrinol Metab 1999; 84: 3666–3672.
Google Scholar
World Health Organization. Obesity: Preventing and managing the global epidemic. WHO Technical Report Series 2000; 894: 1–253.
Bolelli G, Muti P, Micheli A, et al. Validity for epidemiological studies of long-term cryconservation of steroid and protein hormones in serum and plasma. Cancer Epidemiol Biomarkers Prev 1995; 4: 509–513.
Google Scholar
Kley HK, Schlaghecke R, Kruskemper HL. Stability of steroid in plasma over a 10-year period. J Clin Chem Clin Biochem 1985; 23: 875–878.
Google Scholar
Morley JE, Patrick P, Perry 3rd. HM. Evaluation of assays available to measure free testosterone. Metabolism 2002; 51: 554–559.
Google Scholar
Seidell JC, Cigolini M, Deslypere JP, Charzewska J, Ellsinger BM, Cruz A. Body fat distribution in relation to physical activity and smoking habits in 38-year-old European men. The European Fat Distribution Study. Am J Epidemiol 1991; 133: 257–265.
Google Scholar
Winters SJ, Troen P. Episodic luteinizing hormone (LH) secretion and the response of LH and folliclestimulating hormone to LH-releasing hormone in aged men: Evidence for coexistent primary testicular insuf-ficiency and an impairment in gonadotropin secretion. J Clin Endocrinol Metab 1982; 55: 560–565.
Google Scholar
Deslypere JP, Kaufman JM, Vermeulen T, Vogelaers D, Vandalem JL, Vermeulen A. Influence of age on pulsatile luteinizing hormone release and responsiveness of the gonadotrophs to sex hormone feedback in men. J Clin Endocrinol Metab 1987; 64: 68–73.
Google Scholar
Mårin P, Arver S. Androgens and abdominal obesity. Baillieres Clin Endocrinol Metab 1998; 12: 441–451.
Google Scholar
Glass AR, Swerdloff RS, Bray GA, Dahms WT, Atkinson RL. Low serum testosterone and sex-hormone-binding-globulin in massively obese men.J Clin Endocrinol Metab 1977; 45: 1211–1219.
Google Scholar
Zumoff B, Strain GW, Miller LK, et al. Plasma free and non-sex-hormone-binding-globulin-bound testosterone are decreased in obese men in proportion to their degree of obesity. J Clin Endocrinol Metab 1990; 71: 929–931.
Google Scholar
Vermeulen A, Kaufman JM, Deslypere JP, Thomas G. Attenuated luteinizing hormone (LH) pulse amplitude but normal LH pulse frequency, and its relation to plasma androgens in hypogonadism and obese men.J Clin Endocrinol Metab 1993; 76: 1140–1146.
Google Scholar
Pasquali R, Casimirri F, Melchionda N, et al. Weight loss and sex steroid metabolism in massively obese man. J Endocrinol Invest 1988; 11: 205–210.
Google Scholar
Pasquali R, Vicennati V, Scopinaro N, et al. Achievement of near-normal body weight as the prerequisite to normalize sex hormone-binding globulin concentration in massively obese men. Int J Obes 1997; 21: 1–5. 662
Google Scholar
Björntorp P. The regulation of adipose tissue distribution in humans.Int J Obes 1996; 20: 291–302.
Google Scholar
Haffner S, Valdez RA, Mykkänen L, Stern MP, Katz MS. Decreased testosterone and dehydroepiandrosterone sulfate concentrations are associated with increased insulin and glucose concentrations in non diabetic men. Metabolism 1994; 43: 599–603.
Google Scholar
Birkeland, K, Hanssen KF, Torjesen PA, Vaaler S. Level of sex hormone-binding globulin is positively correlated with insulin sensitivity in men with type 2 diabetes. J Clin Endocrinol Metab 1993; 76: 275–278.
Google Scholar
Pasquali R, Casimirri F, De Iasio R, et al. Insulin regulates testosterone and sex hormone-binding globulin concentrations in adult normal weight and obese men. J Clin Endocrinol Metab 1995; 80: 654–658.
Google Scholar
Cohen PG. Aromatase, adiposity, aging and disease. The hypogonadal-metabolic-atherogenic-disease and aging connection. Med Hypothesis 2001; 56: 702–708.
Google Scholar
Vermeulen A, Kaufman JM, Goemaere S, van Pottelberg I. Estradiol in elderly men. Aging Male 2002; 5: 98–102.
Google Scholar
Han TS, Lean MEJ. Self-reported waist circumference compared with the 'Waist Watcher' tape-measure to identify individuals at increased health risk through intra-abdominal fat accumulation. Br J Nutr 1998; 80: 81–88.
Google Scholar
Lean MEJ, Han TS, Deurenberg P. Predicting body composition by densiometry from simple anthropometric measurements. Am J Clin Nutr 1996; 63: 4–14.
Google Scholar
Lemieux S, Prud'homme D, Bouchard C, Tremblay A, Despr ès JP. A single threshold value of waist girth identifies normal-weight and overweight subjects with excess visceral adipose tissue. Am J Clin Nutr 1996; 64: 685–693.
Google Scholar
Han TS, McNeill G, Seidell JC, Lean MEJ. Predicting intra-abdominal fatness from anthropometric measures: The influence of stature. Int J Obes Relat Metab Disord 1997; 21: 587–593.
Google Scholar