Normative Values and Factors Affecting the Pediatric Functional Reach Test in Japanese Children Aged 3–6 Years: A Cross-Sectional Study

AIM: This study aimed to establish normative values for the Functional Reach Test (FRT) in Japanese children aged 3-6 years and examines age-related differences in FRT scores. Additionally, we evaluated the relationship between FRT scores and several factors and a predictive equation was developed to improve the clinical application of FRT. METHODS: A cross-sectional study was conducted with 163 developing Japanese children. Participants completed two trials, with the average serving as the FRT score. Normative values were established for each age group. One-way analysis of variance and multiple regression analysis were used to assess age-related differences and factors influencing FRT performance, respectively. Multiple regression analysis identified age and height as significant predictors, and a predictive equation incorporating these variables was developed. CONCLUSION: This study provides normative FRT data for Japanese children aged 3-6 years, emphasizing the role of age and height. The predictive equation enhances the clinical application of FRT as a balance screening tool for children.