Corrective Exercises and Sports Injury Department, Faculty of Physical Education & Sport Sciences, University of Guilan, Rasht, Iran.
Physiotherapy Department, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Motor Control. 2023 Sep 4;28(1):1-14. doi: 10.1123/mc.2023-0029. Print 2024 Jan 1.
The purpose of this study was to examine the balance recovery strategy in children with hearing (HI) and visual impairments (VI) compared with those without these disorders.
This study featured a cross-sectional design with subjects (N = 45) placed within one of three equally stratified purposive groups (HI, VI, and comparison) within the age range of 9-13 years (mean = 11.43, SD = 1.5). Balance recovery strategy was measured in static and after-perturbation conditions by a four-camera Vicon system used to record three-dimensional lower body kinematic data. A repeated-measures analysis of variance (3 × 2, Group × Condition) was utilized to analyze data. Significance was set at p ≤ .05.
In the static condition, the results of the study showed that there was no significant difference between the groups in the ankle joint sway (p > .05). In hip joint sway, VI children had greater sway compared with comparison (p = .001) and HI children (p = .02). Also, HI children had greater sways than comparison (p = .02). In the after-perturbation condition, the results showed that VI children had greater sway in the hip and ankle joints than HI children (p = .001) and comparison (p = .001) to restore and maintain balance.
It seems that comparison as well as higher proportion VI children use a hip strategy to maintain and restore balance. Also, it seems that HI children use a different strategy (ankle strategy) to maintain and restore balance compared with comparison and VI children.
本研究旨在比较听力（HI）和视力（VI）障碍儿童与无这些障碍儿童的平衡恢复策略。
本研究采用横断面设计，研究对象（N=45）被分为三个等分层的目的组（HI、VI 和对照组）之一，年龄在 9-13 岁之间（平均值=11.43，标准差=1.5）。平衡恢复策略在静态和扰动后条件下通过使用四摄像头 Vicon 系统来测量，该系统用于记录三维下半身运动学数据。采用重复测量方差分析（3×2，组×条件）来分析数据。显著性水平设为 p≤0.05。
在静态条件下，研究结果表明，各组间踝关节摆动无显著差异（p>0.05）。在髋关节摆动方面，VI 儿童的摆动幅度大于对照组（p=0.001）和 HI 儿童（p=0.02）。此外，HI 儿童的摆动幅度也大于对照组（p=0.02）。在扰动后条件下，结果表明 VI 儿童在髋关节和踝关节的摆动幅度大于 HI 儿童（p=0.001）和对照组（p=0.001），以恢复和维持平衡。
似乎对照组以及更多比例的 VI 儿童使用髋关节策略来维持和恢复平衡。此外，HI 儿童似乎使用与对照组和 VI 儿童不同的策略（踝关节策略）来维持和恢复平衡。
