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

Abstract

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.

Results: FRT values significantly increased with age: 9.4 cm (3 years), 10.8 cm (4 years), 11.3 cm (5 years), and 15.7 cm (6 years). Six-year-olds exhibited significantly higher scores than all younger age groups (p < .001). 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.