Recurrence Quantification Analysis of Ankle Kinematics During Gait in Individuals With Chronic Ankle Instability.

Front Sports Act Living

Department of Mechanical and Industrial Engineering, College of Engineering, Northeastern University, Boston, MA, United States.

Published: May 2022

Purpose: An investigation of the ankle dynamics in a motor task may generate insights into the etiology of chronic ankle instability (CAI). This study presents a novel application of recurrence quantification analysis (RQA) to examine the ankle dynamics during walking. We hypothesized that CAI is associated with changes in the ankle dynamics as assessed by measures of determinism and laminarity using RQA.

Methods: We recorded and analyzed the ankle position trajectories in the frontal and sagittal planes from 12 participants with CAI and 12 healthy controls during treadmill walking. We used time-delay embedding to reconstruct the position trajectories to a phase space that represents the states of the ankle dynamics. Based on the phase space trajectory, a recurrence plot was constructed and two RQA variables, the percent determinism (%DET) and the percent laminarity (%LAM), were derived from the recurrence plot to quantify the ankle dynamics.

Results: In the frontal plane, the %LAM in the CAI group was significantly lower than that in the control group ( < 0.05. effect size = 0.86). This indicated that the ankle dynamics in individuals with CAI is less likely to remain in the same state. No significant results were found in the %DET or in the sagittal plane.

Conclusion: A lower frontal-plane %LAM may reflect more frequent switching between different patterns of neuromuscular control states due to the instabilities associated with CAI. With further study and development, %LAM may have the potential to become a useful biomarker for CAI.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9174592PMC
http://dx.doi.org/10.3389/fspor.2022.893745DOI Listing

Publication Analysis

Top Keywords

ankle dynamics
20
ankle
10
recurrence quantification
8
quantification analysis
8
chronic ankle
8
ankle instability
8
cai study
8
position trajectories
8
phase space
8
recurrence plot
8

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!