Region-specific textured insoles enhance static stability in young adults with chronic ankle instability

IF 2.4 3区医学 Q3 BIOPHYSICS

Journal of biomechanics Pub Date : 2025-09-19 DOI:10.1016/j.jbiomech.2025.112974

Yunqi Tang , Xinyue Li , Lin Liu , Pui Wah Kong , Rong Wang , Meixi Li , Yuhong Niu

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引用次数: 0

Abstract

Chronic ankle instability (CAI) impairs postural control through sensorimotor deficits, yet region-specific plantar stimulation strategies remain underexplored. This randomised crossover trial examined the differential effects of textured insoles targeting specific foot regions on static and dynamic stability in 24 young adults with CAI (age: 22.3 ± 2.5 years; Cumberland Ankle Instability Tool score: 16.0 ± 3.3). Participants completed three functional assessments (static single-leg stance, Y-balance test, and jump-landing task) under four experimental conditions: forefoot-textured, midfoot-textured, rearfoot-textured, and smooth control insoles. Results showed that forefoot-textured insoles significantly improved static postural control, reducing total centre of pressure (COP) sway velocity by 8.9 % (54.2 ± 11.7 vs. 49.4 ± 9.3 mm/s, p = 0.024) and COP ellipse area by 15.6 % (223.6 ± 60.8 vs. 188.8 ± 48.3 mm², p = 0.012) compared to control. However, no significant improvements were observed in dynamic stability metrics during jump landing (all p > 0.05) or Y-balance test composite scores (p = 0.075). Subjective stability and comfort ratings did not significantly differ across conditions (p > 0.05). These findings indicate an acute, task-dependent effect of plantar stimulation; the apparent forefoot advantage may reflect a general cutaneous facilitation of balance rather than a CAI-specific mechanism. Dynamic tasks may require complementary training or longer exposure, and the clinical significance remains to be established.

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区域特定的纹理鞋垫增强静态稳定性的年轻人慢性踝关节不稳定

慢性踝关节不稳定（CAI）通过感觉运动缺陷损害姿势控制，但区域特异性足底刺激策略仍未得到充分研究。这项随机交叉试验研究了针对特定足部区域的纹理鞋垫对24名患有CAI的年轻成人（年龄：22.3±2.5岁；Cumberland踝关节不稳定工具评分：16.0±3.3）静态和动态稳定性的不同影响。参与者在前足纹理、中足纹理、后足纹理和平滑控制鞋垫四种实验条件下完成了三项功能评估（静态单腿站立、y -平衡测试和跳落任务）。结果表明，与对照组相比，前足纹理鞋垫显著改善了静态姿势控制，总压力中心（COP）摇摆速度降低了8.9%(54.2±11.7 vs 49.4±9.3 mm/s, p = 0.024)， COP椭圆面积减少了15.6%（223.6±60.8 vs 188.8±48.3 mm2, p = 0.012）。然而，在跳跃着陆时的动态稳定性指标（均p >； 0.05）或y -平衡测试综合得分（p = 0.075）方面没有观察到显著改善。主观稳定性和舒适度评分在不同条件下无显著差异（p > 0.05）。这些发现表明足底刺激具有急性、任务依赖性效应；明显的前足优势可能反映了一般的皮肤促进平衡，而不是cai特异性机制。动态任务可能需要补充训练或更长时间的暴露，临床意义仍有待确定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of biomechanics 生物-工程：生物医学

CiteScore

5.10

自引率

4.20%

发文量

345

审稿时长

1 months

期刊介绍： The Journal of Biomechanics publishes reports of original and substantial findings using the principles of mechanics to explore biological problems. Analytical, as well as experimental papers may be submitted, and the journal accepts original articles, surveys and perspective articles (usually by Editorial invitation only), book reviews and letters to the Editor. The criteria for acceptance of manuscripts include excellence, novelty, significance, clarity, conciseness and interest to the readership. Papers published in the journal may cover a wide range of topics in biomechanics, including, but not limited to: -Fundamental Topics - Biomechanics of the musculoskeletal, cardiovascular, and respiratory systems, mechanics of hard and soft tissues, biofluid mechanics, mechanics of prostheses and implant-tissue interfaces, mechanics of cells. -Cardiovascular and Respiratory Biomechanics - Mechanics of blood-flow, air-flow, mechanics of the soft tissues, flow-tissue or flow-prosthesis interactions. -Cell Biomechanics - Biomechanic analyses of cells, membranes and sub-cellular structures; the relationship of the mechanical environment to cell and tissue response. -Dental Biomechanics - Design and analysis of dental tissues and prostheses, mechanics of chewing. -Functional Tissue Engineering - The role of biomechanical factors in engineered tissue replacements and regenerative medicine. -Injury Biomechanics - Mechanics of impact and trauma, dynamics of man-machine interaction. -Molecular Biomechanics - Mechanical analyses of biomolecules. -Orthopedic Biomechanics - Mechanics of fracture and fracture fixation, mechanics of implants and implant fixation, mechanics of bones and joints, wear of natural and artificial joints. -Rehabilitation Biomechanics - Analyses of gait, mechanics of prosthetics and orthotics. -Sports Biomechanics - Mechanical analyses of sports performance.