Children with Autism Spectrum Disorder, Developmental Coordination Disorder, and typical development differ in characteristics of dynamic postural control: A preliminary study
Children with Autism Spectrum Disorder, Developmental Coordination Disorder, and typical development differ in characteristics of dynamic postural control: A preliminary study
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DOI：
10.1016/j.gaitpost.2018.08.038
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发表时间：
2019-01-01
期刊：
影响因子：
2.4
通讯作者：
Bugnariu, Nicoleta L.
中科院分区：
文献类型：
--
作者：
Miller, Haylie L.;Cacola, Priscila M.;Bugnariu, Nicoleta L.
背景资料：自闭症谱系障碍（ASD）和发育协调障碍（DCD）是具有不同定义和症状的发育障碍。然而，这两种情况都有运动技能方面的困难，包括姿势控制方面的障碍。虽然研究探索了与典型发育（TD）相比，患有DCD和ASD的儿童的姿势摇摆变量，但很少有人使用运动学数据来评估这两种神经发育状况之间的差异程度。有几个敏感和具体的措施，以评估这些population.Research问题的平衡障碍的严重程度：个人与ASD，DCD，TD不同的动态姿势控制？方法：我们在动态平衡任务中量化ASD、DCD和TD之间的姿势控制差异。10名ASD、10名DCD和8名TD年龄匹配的儿童在虚拟环境中完成了动态姿势控制任务。他们倾向于改变他们的压力中心（CoP），以匹配用户控制的对象振荡的目标（0.1 Hz-0.8 Hz）。结果：DCD组有更高的CoP加速度相比，ASD或TD。虽然DCD和TD组的内外向速度没有差异，但ASD组的内外向速度和加速度低于DCD和TD组。ASD组的速度和加速度在前后方向上与TD组没有差异。DCD组中更高的加速度反映了非流体运动;相比之下，ASD组的运动更慢，更流畅。结果可能反映了ASD和DCD儿童如何计划，执行和修改motor actions. Significance的差异：这项研究表明，CoP加速度和速度作为区分ASD，DCD和TD的敏感和具体手段的潜在效用。结果表明ASD和DCD之间的速度和加速度曲线的组差异是了解这些人群如何在动态任务中修改运动计划的重要一步。
Background: Autism Spectrum Disorder (ASD) and Developmental Coordination Disorder (DCD) are developmental disorders with distinct definitions and symptoms. However, both conditions share difficulties with motor skills, including impairments in postural control. While studies have explored postural sway variables in children with DCD and ASD as compared to typical development (TD), few have used kinematic data to assess the magnitude of differences between these two neurodevelopmental conditions. There are few sensitive and specific measures available to assess balance impairment severity in these populations.Research question: Do individuals with ASD, DCD, and TD differ in dynamic postural control?Methods: We quantified postural control differences between ASD, DCD, and TD during a dynamic balance task. 10 ASD, 10 DCD, and 8 TD agematched children completed a dynamic postural control task in a virtual environment. They leaned to shift their center of pressure (CoP) to match a user-controlled object to an oscillating target (0.1 Hz-0.8 Hz).Results: The DCD group had higher CoP accelerations compared to ASD or TD. While the DCD and TD groups did not differ in their medial-lateral velocity, the ASD group had low medial-lateral velocity and acceleration as compared to DCD and TD. ASD group velocity and acceleration did not differ from that of the TD group in the anterior-posterior direction. Higher accelerations in the DCD group reflected non-fluid movements; by contrast, the ASD group had slower, more fluid movements. Results may reflect differences in how children with ASD and DCD plan, execute, and modify motor actions.Significance: This study demonstrates the potential utility of CoP acceleration and velocity as a sensitive and specific means of differentiating between ASD, DCD, and TD. Results indicating group differences between ASD and DCD in velocity and acceleration profiles represent an important step toward understanding how these populations modify motor plans during dynamic tasks.