Utilizing Entropy of Cadence to Optimize Cycling Rehabilitation in Individuals With Parkinson’s Disease

Author:

Kim Younguk12ORCID,Smith Brittany E.1,Shigo Lara M.1ORCID,Shaikh Aasef G.34,Loparo Kenneth A.5,Ridgel Angela L.1

Affiliation:

1. Exercise Science and Exercise Physiology Program, Kent State University, Kent, OH, USA

2. Department of Physical Medicine and Rehabilitation, The University of Alabama at Birmingham, Birmingham, AL, USA

3. Department of Neurology, Case Western Reserve University, Cleveland, OH, USA

4. Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA

5. Institute for Smart, Secure and Connected Systems, Case Western Reserve University, Cleveland, OH, USA

Abstract

Background Previous studies have established that increased Sample Entropy (SampEn) of cadence, a measure of non-linear variability, during dynamic cycling leads to greater improvements in motor function for individuals with Parkinson’s disease (PD). However, there is significant variability in responses among individuals with PD due to symptoms and disease progression. Objectives The aim of this study was to develop and test a paradigm for adapting a cycling exercise intervention using SampEn of cadence and rider effort to improve motor function. Methods Twenty-two participants were randomized into either patient-specific adaptive dynamic cycling (PSADC) or non-adaptive (NA) group. SampEn of cadence was calculated after each of the 12 sessions, and motor function was evaluated using the Kinesia test. Pearson’s correlation coefficient was used to analyze the relationship between SampEn of cadence and motor function improvement. Multiple linear regression (MLR) was used to identify the strongest predictors of motor function improvement. Results Pearson’s correlation coefficient revealed a significant correlation between SampEn of cadence and motor function improvements ( R2 = −.545, P = .009), suggesting that higher SampEn of cadence led to greater motor function improvement. MLR demonstrated that SampEn of cadence was the strongest predictor of motor function improvement (β = −8.923, t = −2.632, P = .018) over the BMI, Levodopa equivalent daily dose, and effort. Conclusions The findings show that PSADC paradigm promoted a greater improvement in motor function than NA dynamic cycling. These data will be used to develop a predictive model to optimize motor function improvement after cycling in individuals with PD.

Funder

TeCK Fund

Kent State University

US Department of Veteran’s Affairs

Davis Phinney Foundation

Publisher

SAGE Publications

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