[The characteristics of the energy support for muscular activity in different somatotypes].

62 healthy untrained males of different somatotypes were given a 30-minute bicycle ergometry [correction of veloergometric] load at the threshold of aerobic exchange. Subjects with a higher percentage of muscular tissue and decreased percentage of fat had their ventilation threshold at a minimal distance from the point of anaerobic transition as compared with the subjects with a more developed fat component. The latters revealed a more active utilisation of lipids whereas the subjects with developed muscles used the carbohydrates rather as the energy substrate.