Vertical Stiffness During Landing: Predicting Fatigue in Female Soccer Players Through Ground Reaction Forces
Presentation Date
4-10-2019
Degree Program
Kinesiology, MS
Major Advisor Name
Tyler Brown
Type of Submission
Scholarly Poster
Abstract
Athletes may increase leg stiffness to safely land when fatigued. Thirty-one females had vertical leg stiffness quantified during five 30cm drop landings immediately prior to and following a competitive soccer season. During each landing, vertical stiffness was calculated as maximal vertical ground reaction force multiplied by the inverse of center of mass vertical displacement, and submitted to a RM ANOVA to test the main effect and interaction between time (pre vs. post) and fatigue (starter vs. non-starter). Vertical stiffness was not larger with the cumulative fatigue of a soccer season (p=0.129), or for athletes playing greater minutes (p=0.392).
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