In this study n=40 patients with diabetes (type I n=20, type II n=20; 20 males, 20 females), who were regularly practising sports, were examined anthropometrically. Anthropological basic data and computed somatotypical parameters correspond to international standards. The higher age of athletes with diabetes type II corresponds to the later onset of this form of diabetes. The registered significant anthropometrical differences between diabetes type I and diabetes type II in both genders correspond to the so-called truncal obesity in the metabolic syndrome and in diabetes type II. The remarkable results support the constitutional importance of the pyknic habitus in diabetes type II in comparison to the pure body fat percentage.