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ORIGINAL RESEARCH article
Front. Physiol.
Sec. Exercise Physiology
Volume 15 - 2024 |
doi: 10.3389/fphys.2024.1473844
This article is part of the Research Topic Biomechanical Performance and Relevant Mechanism of Physical Medicine and Rehabilitation for Neuromusculoskeletal Disorders, Volume II View all 10 articles
Effects of Dual-task Paradigm on the Injury Potential during Landing among Individuals with Chronic Ankle Instability
Provisionally accepted- Shandong Sport University, Jinan, China
Purpose: Chronic ankle instability (CAI) causes maladaptive neuroplastic changes in the central nervous system, which may lead to high injury potential under dual-task conditions. This study aims to explore the effects of dual-task paradigm on the injury potential during landing among individuals with CAI. Methods: Twenty participants with CAI (4 female and 16 male, 12 were affected with their right limbs and 8 were affected with their left limbs, 20.4 ± 1.7 years, 176.9 ± 5.0 cm, and 72.0 ± 11.1 kg) and eighteen without CAI (6 female and 12 male, 20.2 ± 1.5 years, 173.5 ± 7.0 cm, and 70.3 ± 10.8 kg) were recruited. They drop-landed on a trap-door device, with their affected or matched limbs on a flippable platform, under single- (drop-landing only) and dual-task (drop-landing while subtracting of serial threes) conditions. A twelve-camera motion capture system was used to capture the kinematic data. Two-way ANOVA with mixed design (CAI vs non-CAI groups by single- vs dual-task conditions) was used to analyze the data. Results: Significant group-by-condition interactions were detected in the ankle inversion angle (P = 0.040, η2p = 0.012) and ankle inversion angular velocity (P = 0.038, η2p = 0.114). Both indicators decreased among individuals without CAI from single- to dual-task conditions, while remained unchanged among those with CAI; and they were higher among individuals with CAI under both single- and dual-task conditions, compared to those without CAI. Conclusion: Individuals with CAI have a reduced ability to limit ankle inversion compared to those without CAI. Under dual-task conditions, individuals without CAI limited their ankle inversion, while those with CAI did not. Drop-landing, especially under dual-task conditions, poses a high risk of excessive ankle inversion for individuals with CAI.
Keywords: Ankle sprain1, dual-task Paradigm2, drop-landing3, ankle inversion angle4, ankle inversion angular velocity5
Received: 31 Jul 2024; Accepted: 07 Nov 2024.
Copyright: © 2024 Zhong, Luo, Gao, Zhang, Zhu and Shen. 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) or licensor 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:
Peixin Shen, Shandong Sport University, Jinan, China
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