[The influence of exhausting training on the development of the motor pattern of swimming and on the sleep-wake behavior of growing rats].

: At present it is generally accepted that programs of physical training which require coordinate performances of the central and the vegetative nervous system may be conducive to the complex development of central nervous functions. The aim of the study was to investigate the effect of an exhausting swim training with albino rats aged 6-30 days on the development of motor pattern of swimming and on the sleep-wake behaviour. Daily training rats performed the adult motor pattern of swimming earlier than controls which were not trained. Trained animals are more active and longer awake than control rats which were treated daily only by a short stress (stay in cold water for 10 s). During the growth period before puberty exhausting training produces complex effects: the development of motor patterns is accelerated and the central vigilance level is raised. It is unknown which consequences might possibly arise as to the central nervous integration in adult mammals which were strongly trained in early infancy.