The Influence of Lower Extremity Biomechanics and Body Composition on Lower Extremity Stress Fracture Risk in Division I Cross-Country Athletes (2016)

Undergraduates: Yana Ginzburg, Timothy C. Mauntel Abbie E. Smith-Ryan, Kristen L. Kucera, Darin A. Padua

Faculty Advisor: Darin Padua
Department: Exercise & Sport Science

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Stress fractures are prevalent among cross-country athletes. This study aims to identify lower extremity biomechanics and body composition characteristics that influence stress fracture risk. 37 collegiate cross-country athletes were tested at preseason. Biomechanical data were obtained through visual observation of overhead and single leg squats. Body composition data were gathered via DEXA scans. Injury data were recorded in an electronic medical record for one year following testing. Chi-square analyses examined biomechanical data, and independent samples t-tests examined body composition data. Females and athletes with a lower BMI are more likely to sustain a stress fracture. Injured leg lean mass was less than leg lean mass of uninjured athletes. The biomechanical assessments were unable to discern between the injured and uninjured groups. Females and athletes with low BMI or small lower extremity lean mass should be monitored so injury prevention interventions may be implemented to mitigate stress fracture risk.