Kinematic and Coordination Variability in Runners with and Without Patellofemoral Pain
| Autor: | Li Li, Jessica Mutchler, Barry A. Munkasy, Klarie Macias, John C. Garner, Samuel Wilson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty business.industry Repeated measures design Physical Therapy Sports Therapy and Rehabilitation 030229 sport sciences Kinematics lcsh:Human anatomy Knee Joint Horizontal plane Sagittal plane lcsh:QM1-695 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation medicine.anatomical_structure Physiology (medical) Coronal plane physical exertion joint instability knee joint running patellofemoral joint female Medicine Orthopedics and Sports Medicine Exertion Ankle business 030217 neurology & neurosurgery |
| Zdroj: | INTERNATIONAL JOURNAL OF KINESIOLOGY AND SPORTS SCIENCE, Vol 8, Iss 3, Pp 58-66 (2020) |
| Popis: | Background: Patellofemoral pain (PFP) is a common overuse injury that has been suggested to cause abnormal gait kinematics and variability in runners with PFP. Conflicting results have been presented as to the variability of joint kinematics and joint coordination. Objective: The purpose of this study was to examine the variability of lower extremity kinematics and joint coordination in the presence of PFP and exertion. Methods: Six female runners with PFP and matched controls (CON) ran at a self-selected pace on an instrumented treadmill until exertion or pain criteria was met. Sixteen anatomical retroreflective markers and seven tracking clusters were placed on the participants’ lower extremities. Data collected for 20 steps from the beginning, middle, and end of the run were processed. Kinematic variability was assessed for each participant by calculating the standard deviation (SD) of peak knee flexion, internal rotation, and adduction angle and their velocities. Continuous relative phase (CRP) mean values were calculated from normalized phase plots for coordination relationships between knee horizontal plane motion and hip sagittal, frontal, and horizontal and ankle frontal plane motion. Coordination variability was calculated as the CRP coupling SD over 100% of stance for each time point for each participant. Statistical comparisons were assessed through a 2 (PFP vs. CON) x 3 (beginning, middle, end) repeated measures ANOVA. Results: There was an increase in variability for peak knee adduction angle, peak knee adduction velocity, hip flexion/knee rotation CRP, and knee rotation/rearfoot eversion CRP over time for the PFP group compared with CON (P |
| Databáze: | OpenAIRE |
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