Term of Award

Summer 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 of Health and Kinesiology

Committee Chair

Li Li

Committee Member 1

Jessica Mutchler

Committee Member 2

Barry Munkasy

Committee Member 3

Barry Joyner

Committee Member 3 Email



INTRODUCTION: Patellofemoral pain (PFP) is a common overuse injury where the cause of the pain is largely unknown. Previous research has not compared the variability of joint coordination and kinematics in the same study. PURPOSE: The purpose of this study was to examine the effects of PFP and exertion on the variability of lower extremity kinematics, and joint coordination. METHODS: The participants included 6 female runners with PFP (R-PFP) (21.0 ± 0.55 years; 66.1 ± 7.9 kg; 1.62 ± 0.09 m), and a control group of 6 healthy female runners (CON) (21.2 ± 1.17 years; 61.5 ± 6.9 kg; 1.67 ± 0.11 m). Sixteen anatomical retroreflective markers, as well as 4 tracking clusters, were placed on the participants’ lower extremities. The participants ran at a self-selected pace on an instrumented treadmill. Data collected from the beginning, middle, and end of the run was analyzed. Joint kinematic and joint coordination (CRP) variability were calculated. RESULTS: R-PFP finished the run with significantly larger knee adduction peak angle variability, F(2, 10) = 4.14, p < .05). R-PFP (30.67°*s-1) had significantly more knee adduction peak velocity variability, F(2, 10) = 5.82, p < .05. R-PFP also had significant CRP variability at the end of the run for hip flexion and knee rotation, F(2, 10) = 6.23, p < .05, and knee rotation and ankle eversion, F(2, 10) = 5.52, p < .05.

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