Shouider griddie is a part of human locomotion in the process of postural movement ontogenesis. Its locomotion function is then altemated by the manipulation function and grip realization. The locomotion spectrum during a sport activity allows the shouider griddie to use the locomotion function. The study brings an example of some muscie invoivement during the locomotion reaiized by the shouider griddie. These selected muscles are parts of interaction chains or realize the scapula position, which is a decisive fact for central position of shouider griddie when realizing human locomotion

        Key words: human locomotion, electromyography, crossed locomotion pattern