Original Research ARTICLE
The effect of ankle support on lower limb kinematics during the Y-balance test using nonlinear dynamic measures
- 1Charles Sturt University, Australia
- 2Khalifa University, United Arab Emirates
- 3University of Poitiers, France
Background: According to dynamical systems theory, an increase in movement variability leads to greater adaptability, which may be related to the number of feedforward and feedback mechanisms associated with movement and postural control. Using Higuchi dimension (HDf) to measure complexity of the signal and Singular Value Decomposition Entropy (SvdEn) to measure the number of attributes required to describe the biosignal, the purpose of this study was to determine the effect of kinesiology and strapping tape on center of pressure dynamics, myoelectric muscle activity and joint angle during the Y balance test.
Method: Forty-one participants between 18 and 34 years of age completed five trials of the Y balance test without tape, with strapping tape (ST), and with kinesiology tape (KT) in a cross-sectional study. The mean and standard errors were calculated for the centre of pressure, joint angles and muscle activities with no tape, ST and KT. The results were analysed with a repeated measures ANOVA model (PA<.05) fit and followed by Tukey post hoc analysis from the R package with probability set at P<.05.
Results: SvdEn indicated significantly decreased complexity in the anterior-posterior (p<.05) and internal-external rotation (p<.001) direction of the ankle, whilst HDf for both ST and KT identified a significant increase in ankle dynamics when compared to no tape (p<.0001) in the mediolateral direction. Taping also resulted in a significant difference in gastrocnemius muscle myoelectric muscle activity between ST and KT (p=.047).
Conclusion: Complexity of ankle joint dynamics increased in the sagittal plane of movement with no significant changes in the possible number of physiological attributes. In contrast, the number of possible physiological attributes contributing to ankle movement was significantly lower in the frontal and transverse planes. Simply adhering tape to the skin is sufficient to influence neurological control and adaptability of movement. In addition, adaptation of ankle joint dynamics to retain postural stability during a Y Balance test is achieved differently depending on the direction of movement.
Keywords: Tape support, Ankle joint dynamics, Singular value decomposition entropy, Higuchi fractal dimension, Y balance test, movement variability
Received: 18 Apr 2019;
Accepted: 09 Jul 2019.
Edited by:Plamen C. Ivanov, Boston University, United States
Reviewed by:Pandelis Perakakis, Universidad Loyola Andalucía, Spain
Sergi Garcia-Retortillo, University of Girona, Spain
Copyright: © 2019 Jelinek, Khalaf, Poilvet, Khandoker, Heale and Donnan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Mr. Luke A. Donnan, Charles Sturt University, Bathurst, Australia, email@example.com