Part 1 Workshop 1 - the physical status: the use and interpretation of anthropometry in adolescence, P.C. Sizonenko and J.H. Himes; assessment of growth and maturation during adolescence, N. Cameron; anthropometry in adolescence - secular trends, adoption, ethnic and environmental differences, L.A. Proos; body composition during adolescence - methods, limitations and determinants, M.F. Rolland-Cachera; catch-up growth during adolescence, R.H. Largo; functional consequences from varying patterns of growth and maturation during adolescence, M.S. Micozzi; maternal growth during pregnancy and lactation, T.O. Scholl, et al. Part 2 Obesity in childhood: introduction, M.O. Savage; mechanisms of appetite control and their abnormalities in obese patients, J.E. Bhundell, et al; energy metabolism and obesity in childhood, P.S.W. Davies; endocrine-metabolic pattern and adipose tissue distribution, P. Marin and P. Bjorntorp; therapeutic strategies in childhood obesity, W.H. Dietz. Part 3 Insulin insensitivity in childhood and adulthood: molecular determinants of insulin action, C.R. Kahn and F. Folli; in vivo metabolic defects in non-insulin-dependent diabetes mellitus, R.C. Bonadonna; Syndrome X, E. Ferrannini; insulin-resistant syndromes in children, S. Caprio.