Comparative Analysis Of Foot Posture Index (FPI-6) Between Athletes And Laymen: Implications For Biomechanical Adaptations In High-Impact Sports

Abstract

This study examines the biomechanical differences in foot posture between collegiate athletes participating in high-impact sports and non-athletic individuals, utilizing the Foot Posture Index (FPI-6) as a standardized assessment tool. A total of thirty participants from each group were evaluated across six criteria, focusing on both rearfoot and forefoot alignment parameters. The analysis revealed that non-athletic individuals exhibited significantly more pronated foot postures compared to athletes, particularly in areas such as talar head palpation, medial arch congruence, and malleolar curvature. These postural differences may increase the risk of musculoskeletal disorders, including plantar fasciitis and Achilles tendinopathy, in non-athletic individuals. Conversely, athletes displayed postural adaptations that suggest enhanced structural stability, likely resulting from the repeated mechanical loading and neuromuscular conditioning associated with their participation in sports. Interestingly, no significant differences were observed in calcaneal inversion/eversion or talonavicular joint prominence, indicating that certain components of foot structure might be less responsive to functional adaptations. The results of this study highlight the utility of the FPI-6 as an effective diagnostic and preventive screening tool across both clinical and sports environments. They also emphasize the need for individualized assessment protocols tailored to injury prevention and performance enhancement. Future research is encouraged to include longitudinal and sport-specific studies further to clarify the connection between athletic training and foot morphology.