ABSTRACT
One of the determinants of successes of movement activities is the ability regarded as “motor adjustment”. It was defined, by Meinel and Schnabel (1987), as the ability to react (adjust) according to predicted or unpredicted changes of task circumstances. It can lead to little changes (modifications) of motor programs performed or to the creation of completely new ones. In their opinion reactions according to relatively predictable stimuli only need to involve little verification of previous activity. This correction resolves itself to adjustment of chosen space-time-force parameters of movement structure, simultaneously retaining a long term plan of activity (for instance change of pace during cross country running in relation to the terrain). Greater changes in the environeniental surroundings can disturb the flow of movement which can produce temporary interruption of the program or force the initiation of a completely new one. What is more, it dose not possess the continuation of the previous movement phase.
