Du Wenchong, Wilmut Kate, Barnett Anna L
Department of Psychology, Social Work & Public Health, Faculty of Health & Life Sciences, Oxford Brookes University, Gipsy Lane, Oxford OX3 0BP, UK.
Hum Mov Sci. 2015 Oct;43:9-14. doi: 10.1016/j.humov.2015.06.010. Epub 2015 Jul 5.
Several studies have shown that Developmental Coordination Disorder (DCD) is a condition that continues beyond childhood. Although adults with DCD report difficulties with dynamic balance, as well as frequent tripping and bumping into objects, there have been no specific studies on walking in this population. Some previous work has focused on walking in children with DCD but variation in the tasks and measures used has led to inconsistent findings. The aim of the current study therefore was to examine the characteristics of level walking in adults with and without DCD. Fifteen adults with DCD and 15 typically developing (TD) controls walked barefoot at a natural pace up and down an 11 m walkway for one minute. Foot placement measures and velocity and acceleration of the body were recorded, as well as measures of movement variability. The adults with DCD showed similar gait patterns to the TD group in terms of step length, step width, double support time and stride time. The DCD group also showed similar velocity and acceleration to the TD group in the medio-lateral, anterior-posterior and vertical direction. However, the DCD group exhibited greater variability in all foot placement and some body movement measures. The finding that adults with DCD have a reduced ability to produce consistent movement patterns is discussed in relation to postural control limitations and compared to variability of walking measures found in elderly populations.
多项研究表明，发育性协调障碍（DCD）是一种持续至童年期之后的病症。尽管患有DCD的成年人报告存在动态平衡困难，以及经常绊倒和撞到物体的情况，但尚未有针对该人群行走情况的具体研究。之前的一些工作聚焦于患有DCD的儿童的行走情况，但所使用的任务和测量方法的差异导致了不一致的研究结果。因此，本研究的目的是检查患有和未患有DCD的成年人在平地上行走的特征。15名患有DCD的成年人和15名发育正常（TD）的对照组人员赤足以自然步速在一条11米长的通道上来回行走一分钟。记录足部着地测量数据、身体的速度和加速度，以及运动变异性测量数据。患有DCD的成年人在步长、步宽、双支撑时间和步幅时间方面表现出与TD组相似的步态模式。DCD组在内外侧、前后和垂直方向上的速度和加速度也与TD组相似。然而，DCD组在所有足部着地和一些身体运动测量方面表现出更大的变异性。结合姿势控制限制，讨论了患有DCD的成年人产生一致运动模式的能力下降这一发现，并与老年人群中行走测量的变异性进行了比较。
