<![CDATA[Introduction: Two commonly used types of bags are backpacks that distribute weight evenly and totebags that put weight on one side of the body. The use of bags by school-aged children can affect their postural balance. Physiotherapy plays a role in ergonomics education, corrective exercises and core muscle strengthening to prevent muskuloskeletal disorders due to unbalanced loads. Purpose: This study aims to analyze the effect of using backpacks and totebags on the movement of Center of Pressure (CoP) in children aged 8-12 years. Method: This study used 25 samples selected by purposive sampling technique with observational method and cross-sectional approach. CoP measurements were taken using the Zebris FDM-s in the gymnasium laboratory of the Faculty of Health Sciences, Universitas Muhammadiyah Surakarta. Data analysis included univariate, bivariate, Shapiro-Wilk normality test, and Mann Whitney test with a significance of p<0.05. Result: The Mann-Whitney statistical test showed that there was no significant difference between the two types of bags on CoP movement (p=0.826). Despite the change in load distribution, the child's body is still able to adapt. Conclusion: The use of backpacks and totebags does not directly affect a child's postural balance in the short term, but it is important to pay attention to the weight and duration of use to prevent long-term muskuloskeletal disorders.]]>
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