Der Einfluß von extremen Ausdauerbelastungen auf den Eiweißstoffwechsel des Menschen mit besonderer Berücksichtigung des Immunsystems

In summer 1981, six long-distance runners covered a 1100-km-course across the Federal Republic of Germany within 20 days. Four of them were on a more or less ovo-lacto-vegetable and two a vegetarian diet. In spite of a high absolute but indeed low relative protein supply, a continuous decrease of the total protein content could be noticed in the serum. The alterations of the protein fractions corresponded to those of an acute-phase reaction. The Immunoglobulin-G and the Immunoglobulin-A content decreased continuously. The cortisol level was always above the norm, the insulin level always below. The glucagon level increased continuously in the course of the day. The urea-N-level moved around…