Relationship among maximum hip isometric strength, hip kinematics, and peak gluteal muscle force during running.

OBJECTIVE: To determine if there is a relationship among isometric hip strength, hip kinematics, and peak gluteal muscle forces in cross-country runners during running. DESIGN: Cross Sectional. SETTING: University Biomechanics Laboratory. PARTICIPANTS: Forty-six NCAA Division III collegiate cross-country runners (18 males, 28 females). MAIN OUTCOME MEASURES: Pearson correlation coefficients were used to describe relationships among isometric hip strength, hip kinematics, and peak gluteal muscle forces during the stance phase of running. Strength of correlations were interpreted as little to no relationship (r < 0.25), fair relationship (0.25 ≤ r < 0.5), moderate relationship (0.5 ≤ r < 0.75), and strong relationship (r ≥ 0.75). Correlations were considered significant if p < 0.05. RESULTS: Little to no relationships were found among isometric hip strength and gluteal muscle forces during running (r < 0.25). A fair relationship was present between prone external rotation isometric hip strength and peak hip adduction (0.25