Characterization of motor control in handwriting difficulties in children with or without developmental coordination disorder
Characterization of motor control in handwriting difficulties in children with or without developmental coordination disorder
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DOI：
10.1111/j.1469-8749.2009.03478.x
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发表时间：
2010-03-01
影响因子：
3.8
通讯作者：
Yu, Nan-Ying
中科院分区：
文献类型：
--
作者：
Chang, Shao-Hsia;Yu, Nan-Ying
目的应用计算机运动分析技术对发育性协调障碍（DCD）儿童的书写缺陷进行研究（40名女性，32名男性;平均年龄7岁，SD 7个月;范围6岁2个月至7岁11个月），有书写缺陷（33与DCD，39没有DCD）;和22个年龄和性别匹配的儿童没有手写缺陷被要求执行手写任务的数字平板电脑上的运动学和动力学数据的收集。当书写一个不熟悉的字符时，实现运动自动化所需的练习时间被用来评估手写的运动学习。结果书写缺陷和发育性书写障碍儿童书写简单字时，书写速度快，书写速度快，书写速度慢，书写速度快，书写速度慢，（1.22倍于无书写缺陷的人），但在书写复杂字符时，他们的笔画速度和笔力较低（0.85和0.89倍，没有手写缺陷，分别）。解释通过连接的结果与神经运动控制理论，它被确定为DCD的儿童有困难，执行流畅的手写所需的开环和闭环运动。
AIM The purpose of this study was to characterize handwriting deficits in children with developmental coordination disorder (DCD) using computerized movement analyses.METHOD Seventy-two children (40 females, 32 males; mean age 7y, SD 7mo; range 6y 2mo to 7y 11mo) with handwriting deficits (33 with DCD, 39 without DCD); and 22 age-and sex-matched children without handwriting deficits were asked to perform handwriting tasks on a digital tablet for the collection of kinematic and kinetic data. Practice times required to achieve automation of movement when writing an unfamiliar character were used to assess the motor learning of handwriting. The children were asked to copy three simple and three complex characters, and the velocity and axial pen force used for corresponding strokes were compared.RESULTS The attainment of automated handwriting was markedly slower in children with handwriting deficits and DCD, who used a faster stroke velocity to write simple characters (1.22 times those without handwriting deficits), but when writing complex characters, their stroke velocity and pen force were lower (0.85 and 0.89 times those without handwriting deficits, respectively).INTERPRETATION By linking the results with neuromotor control theories, it was determined that children with DCD have difficulties performing the open-loop and closed-loop movements required for fluent handwriting.