Objective To investigate plantar pressure distribution patterns in preschool children attending childcare institutions in Tongzhou District, Beijing, and to estimate the detection rates of flatfoot and high-arched foot, so as to provide clinical evidence for flatfoot prevention. Methods In 2024, a plantar pressure screening was conducted among 1 935 preschool children aged 4 - 6 years from eight childcare institutions in Tongzhou District, Beijing.Differences in sex, family history, age, region, body mass index (BMI), and daily extracurricular physical activity duration were compared across foot types.Multivariate logistic regression was used to identify factors associated with foot type. Results The detection rates of flatfoot and high-arched foot were 19.8% and 3.9%, respectively.Higher BMI (OR=1.113, 95%CI: 1.057 - 1.172), younger age (reference: 6 years old; 4 years old: OR=2.223, 95%CI: 1.599 - 3.091; 5 years old: OR=1.377, 95%CI: 1.027 - 1.847),<2 h/d of extracurricular physical activity (OR=3.271, 95%CI: 2.501 - 4.280), and family history (OR=1.494, 95%CI: 1.108 - 2.016) were risk factors for flatfoot.For high-arched foot, lower BMI (OR=0.701, 95%CI: 0.606 - 0.810), <2 h/d of extracurricular physical activity (OR=5.532, 95%CI: 3.272 - 9.352), and family history (OR=9.118, 95%CI: 4.852 - 17.135) were risk factors, whereas rural residence was a protective factor (OR=0.373, 95%CI: 0.215 - 0.646). Conclusions Preschool children with higher BMI and shorter extracurricular physical activity time are more likely to have flatfoot, and insufficient extracurricular physical activity is also associated with a higher likelihood of high-arched foot. Strengthening plantar muscle function and maintaining an appropriate body weight may help reduce the risk of flatfoot and high-arched foot in preschool children.
Key words
preschool children /
plantar pressure test /
flatfoot /
high-arched foot
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