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Category

Running & Jumping

Document Type

Paper

Abstract

In trail running athletes must adapt their movement patterns to navigate obstacles in their path. Sample entropy is a method to evaluate an athlete’s flexibility to alter their movement from stride to stride. The purpose of this study was to examine the effects of running speed, duration, terrain, sex, and footwear on movement complexity in trail runners. Thirty trail runners (15 female) ran a trail loop in two shoes: a lace shoe and a wrap shoe. We used linear mixed effects models to examine the effects of independent variables on sample entropy of foot accelerations. More technical terrain, faster running speed, being early in the run (vs. the end of the run), female sex and the wrap shoe were associated with greater complexity. A wrap shoe designed to better conform to the foot may offer improvements in movement complexity associated with better running performance and absence of injury.

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