Joint Angle Variability Is Altered in Patients with Peripheral Artery Disease after Six Months of Exercise Intervention

Authors

Farah Fallahtafti, University of Nebraska at OmahaFollow
Zahra Salamifar, University of Nebraska at OmahaFollow
Mahdi Hassan, University of Nebraska at Omaha
Hafizur Rahman, University of Nebraska at OmahaFollow
Iraklis Pipinos, University of Nebraska Medical CenterFollow
Sara A. Myers, University of Nebraska at OmahaFollow

Author ORCID Identifier

Myers - https://orcid.org/0000-0002-2934-2624

Rahman - https://orcid.org/0000-0003-1739-3544

Fallahtafti - https://orcid.org/0000-0003-1739-3544

Pipinos - https://orcid.org/0000-0001-6873-6346

Document Type

Article

Publication Date

10-6-2022

Abstract

Supervised exercise therapy (SET) is a conservative non-operative treatment strategy for improving walking performance in patients with peripheral artery disease (PAD). Gait variability is altered in patients with PAD, but the effect of SET on gait variability is unknown. Forty-three claudicating patients with PAD underwent gait analysis before and immediately after a 6-month SET program. Nonlinear gait variability was assessed using sample entropy, and the largest Lyapunov exponent of the ankle, knee, and hip joint angle time series. Linear mean and variability of the range of motion time series for these three joint angles were also calculated. Two-factor repeated measure analysis of variance determined the effect of the intervention and joint location on linear and nonlinear dependent variables. After SET, walking regularity decreased, while the stability remained unaffected. Ankle nonlinear variability had increased values compared with the knee and hip joints. Linear measures did not change following SET, except for knee angle, in which the magnitude of variations increased after the intervention. A six-month SET program produced changes in gait variability toward the direction of healthy controls, which indicates that in general, SET improved walking performance in individuals with PAD.

Comments

This is an Open Access article licensed under CC BY.

DOI: https://doi.org/10.3390/e24101422

Journal Title

Entropy

Volume

24

Issue

10

First Page

1422

Recommended Citation

Fallahtafti, Farah; Salamifar, Zahra; Hassan, Mahdi; Rahman, Hafizur; Pipinos, Iraklis; and Myers, Sara A., "Joint Angle Variability Is Altered in Patients with Peripheral Artery Disease after Six Months of Exercise Intervention" (2022). Journal Articles. 348.
https://digitalcommons.unomaha.edu/biomechanicsarticles/348

Creative Commons License

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