Navicular Drop Before and After Fatigue of the Ankle Invertor Muscles
Context: Navicular drop is widely believed to be an indicator of elevated susceptibility to pronation-related injuries, which may be increased by fatigue in the muscles that dynamically support the medial longitudinal arch. Objective: The purpose of this study was to evaluate navicular drop before and after fatigue of the ankle invertor muscles among individuals with different foot types. Participants: 20 male and 16 female recreationally active, college-age volunteers (20.03 ± 1.48 years of age). Methods: Navicular drop was measured before and after inducing fatigue in the ankle invertor muscles. Participants' foot types were classified as high-arch, neutral, or low-arch. Results: There was no interaction between foot type and trial, and no main effect for trial. A main effect for foot type was significant (p =.001). Intra-class correlation coefficients for prefatigue and postfatigue measurements indicated good internal consistency. Conclusion: Our findings failed to provide any evidence to support the existence of a relationship between ankle invertor muscle fatigue and static measurements of change in navicular height from a sitting to standing position.
MSU Digital Commons Citation
Gardin, Fredrick; Middlemas, David; Williams, Jennifer L.; Leigh, Steven; Horn, Robert; and Mokha, Monique, "Navicular Drop Before and After Fatigue of the Ankle Invertor Muscles" (2013). Department of Exercise Science and Physical Education Scholarship and Creative Works. 47.