Wilmut K, Du W, Barnett A L
Perception and Motion Analysis Lab, Oxford Brookes University, Oxford, UK.
Exp Brain Res. 2016 Jun;234(6):1747-55. doi: 10.1007/s00221-016-4592-x. Epub 2016 Feb 15.
Previous research has shown that adults with Developmental Coordination Disorder (DCD) show increased variability of foot placement measures and movement of the centre of mass (CoM) while walking. The current study considered the gait patterns of young and older children with DCD. Fourteen young children with DCD (7-12 years), 15 older children with DCD (12-17 years) and 29 age- and gender-matched typically developing children took part. Children were asked to walk up and down a flat 10-m-long pathway for 1 min, while the movement of their feet and trunk was recorded using motion analysis. The gait pattern of children with DCD was characterised by wider steps, elevated variability in the time spent in double support and stride time and greater medio-lateral velocity and acceleration compared to their peers. An elevated variability in medio-lateral acceleration was also seen in the young but not the older children with DCD. In addition, the young children showed a greater variability in velocity and acceleration in all three directions compared to the older children. The data suggest that the high incidence of trips and falls seen in children with DCD may be due to differences in the control of the CoM.
先前的研究表明，患有发育性协调障碍（DCD）的成年人在行走时，足部放置测量值和质心（CoM）运动的变异性会增加。当前的研究考察了患有DCD的幼儿和大龄儿童的步态模式。14名患有DCD的幼儿（7至12岁）、15名患有DCD的大龄儿童（12至17岁）以及29名年龄和性别匹配的发育正常儿童参与了研究。要求儿童在一条10米长的平坦通道上来回行走1分钟，同时使用运动分析记录他们的足部和躯干运动。与同龄人相比，患有DCD的儿童的步态模式表现为步幅更宽、双支撑时间和步幅时间的变异性增加，以及更大的内外侧速度和加速度。在患有DCD的幼儿中也观察到内外侧加速度的变异性增加，但大龄儿童中未观察到。此外，与大龄儿童相比，幼儿在所有三个方向上的速度和加速度变异性更大。数据表明，患有DCD的儿童中绊倒和跌倒的高发生率可能是由于质心控制的差异。
