There are some general regularities of human physical development, an example of which is lateralization. The objective of the study was to identify and compare the direction and scope of body asymmetry and its changes in 7–8-year-old children in Poland and Slovakia. After having compared Polish and Slovak children in terms of the functional asymmetry, it may be stated that no significant differences between the two populations were reported. The comparison in terms of the size of asymmetry showed that Polish girls display a significantly higher level of dynamic asymmetry than Slovak girls, whereas Polish and Slovak boys have a comparable level of dynamic asymmetry.
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