Bone mineral density (BMD) is influenced by growth factors, such as growth hormone (GH) and insulin-like growth immunoassay, since bio GH is quantified on a biological outcome. To determine if bio GH and components of the IGF-I system were associated with BMD in age-matched men (M;n-41, 19.1 +/- 0.2 year, 70 +/- 3 kg, 163 +/- 25 cm) and women (W. n-39, 18.6 +/- 0.3 year, 66 +/- 3kg, 141 ...