The Relationship of Medial Longitudinal Arch Stiffness and Mechanics of The Approach to Sprint Termination

Abstract

This project explores the impact of Medial Longitudinal Arch (MLA) stiffness, measured both barefoot and in shoes, on biomechanics during the approach to sprint termination in males and females. During this phase, increased vertical loading is observed, with the MLA acting as a spring to manage force absorption. The primary objectives were twofold: first, to investigate the association between MLA stiffness and spatiotemporal characteristics; second, to examine the relationship between MLA stiffness and lower extremity stiffness during the approach to sprint termination. Key findings indicate that increased MLA flexibility correlates with extended braking times in males, although no significant associations were found for lower extremity stiffness. However, no significant associations were found between MLA stiffness and lower extremity stiffness for either sex, highlighted by variability influenced by approach strategies. In conclusion, while MLA functionality appears integral to sub-phase duration of the approach to sprint termination, further investigation into movement strategies, influenced by motor abilities and task requirements, is crucial to fully elucidate their interplay with lower extremity mechanics in this context.