Introduction: Down syndrome is the most common chromosomal abnormality caused by the presence of an additional copy of chromosome 21. Children with Down syndrome show considerable interindividual variability in motor abilities and often experience motor development impairments, manifested as impairments of postural control, reduced coordination, limited manual dexterity, and difficulties performing activities of daily living. Factors such as hypotonia, reduced muscle performance, and ligament laxity further influence motor development. Therefore, systematic monitoring of motor development is essential for interventions implemented by physiotherapists. Purpose: The aim of this thesis was to assess the motor abilities of children with Down syndrome using the Movement ABC-2 test. Methods: The study included 13 children with Down syndrome aged between 7 and 16 years. Motor abilities were assessed using the standardized Movement Assessment Battery for Children-2, which evaluates manual dexterity, aiming and catching, and balance. Data on physical activity were obtained using a parent questionnaire. Statistical analysis was performed using SPSS. Non-parametric statistical tests were applied, including the Friedman test, Wilcoxon test, and Mann–Whitney U test. The level of statistical significance was set at p < 0.05. Results: Children with Down syndrome achieved the lowest scores in manual dexterity and the highest scores in aiming and catching on the Movement ABC-2 test. Compared with normative values, children with Down syndrome demonstrated significantly lower scores across all test domains and in the total score. Differences according to sex, level of intellectual disability, physical activity, and participation in physiotherapy were not statistically significant. Discussion and conclusion: The results confirm the presence of more pronounced motor deficits in children with Down syndrome compared with the normative population, particularly in the domain of manual dexterity. Further research with a larger sample size is needed to better understand the factors influencing the motor development of children with Down syndrome.
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