Term of Award

Spring 2017

Degree Name

Master of Science in Kinesiology (M.S.)

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Department

Department of Health and Kinesiology

Committee Chair

Li Li

Committee Member 1

Barry Munkasy

Committee Member 2

Jessica Mutchler

Abstract

Background: Navicular drop can be defined as the distance the navicular tuberosity moves from a standing weight bearing to a standing neutral position, as the subtalar joint moves from a relaxed position to a neutral position. Navicular drop is an important measurement for clinicians used to describe foot function, pronation, and excessive movement seen in several pathologies. Objective: The purpose of this study is to see if navicular drop is influenced by mode or speed of locomotion, if it is will there be other influences such as the forefoot and heel soft tissue, and will those factors influence those measures. The secondary purpose of this study is to see if the static and dynamic measures of navicular drop will be reliable. Methods: This study included fourteen 21-25 year old recreationally active individuals. Three reflective markers were placed on the medial aspect of the participant’s right foot. Static measure of navicular drop was taken, and then the participants were instructed to walk, and run on a treadmill at different speeds. Statistical Analysis: Statistical Package for Social Sciences (SPSS) software version (23.0) was used. Intraclass correlation coefficients (2,1) model were analyzed in SPSS to determine reliability values of the static and dynamic measures of navicular position and drop. An Analysis Of Variance (ANOVA) was analyzed for differences under different conditions. Results: Navicular drop was higher during running (14.83 ± 0.61mm) compared to walking (8.19 ± 0.52mm) PNavicular drop during dynamic movement is greater than the static measure, and navicular drop is greater during running compared to walking.

Research Data and Supplementary Material

Yes