[Genetic and phylogenetic aspects of games and sports (author's transl)]

Games and sports have increasingly become a biologically necessary adaption reaction of man to his ever easier living conditions due to subjugation of the environment. "Physical performance", defined as the capacity of the individual to cope adequately with the physical and psychic demands of the environment and his career has doubtless played a great part in the phylogenetic development of man. Everything connected with it--and that is not only purely motor, but also corresponding esthesiophysiology and intellectual capacities--has contributed to a considerable extent to the selective formation of man.