Wilmut Kate, Du Wenchong, Barnett Anna L
Perception and Motion Analysis Lab, Oxford Brookes University, Oxford, United Kingdom.
PLoS One. 2015 Apr 13;10(4):e0124695. doi: 10.1371/journal.pone.0124695. eCollection 2015.
During everyday life we move around busy environments and encounter a range of obstacles, such as a narrow aperture forcing us to rotate our shoulders in order to pass through. In typically developing individuals the decision to rotate the shoulders is body scaled and this movement adaptation is temporally and spatially tailored to the size of the aperture. This is done effortlessly although it actually involves many complex skills. For individuals with Developmental Coordination Disorder (DCD) moving in a busy environment and negotiating obstacles presents a real challenge which can negatively impact on safety and participation in motor activities in everyday life. However, we have a limited understanding of the nature of the difficulties encountered. Therefore, this current study considered how adults with DCD make action judgements and movement adaptations while navigating apertures. Fifteen adults with DCD and 15 typically developing (TD) controls passed through a series of aperture sizes which were scaled to body size (0.9-2.1 times shoulder width). Spatial and temporal characteristics of movement were collected over the approach phase and while crossing the aperture. The decision to rotate the shoulders was not scaled in the same way for the two groups, with the adults with DCD showing a greater propensity to turn for larger apertures compared to the TD adults when body size alone was accounted for. However, when accounting for degree of lateral trunk movement and variability on the approach, we no longer saw differences between the two groups. In terms of the movement adaptations, the adults with DCD approached an aperture differently when a shoulder rotation was required and then adapted their movement sooner compared to their typical peers. These results point towards an adaptive strategy in adults with DCD which allows them to account for their movement difficulties and avoid collision.
在日常生活中，我们在繁忙的环境中活动，会遇到一系列障碍，比如狭窄的通道迫使我们转动肩膀才能通过。在发育正常的个体中，转动肩膀的决定是根据身体比例做出的，并且这种动作适应在时间和空间上都与通道的大小相匹配。尽管这实际上涉及许多复杂的技能，但人们可以毫不费力地完成。对于患有发育性协调障碍（DCD）的个体来说，在繁忙的环境中移动并应对障碍是一项真正的挑战，这可能会对日常生活中的安全和参与体育活动产生负面影响。然而，我们对他们所遇到困难的本质了解有限。因此，本研究探讨了患有DCD的成年人在通过通道时如何做出动作判断和进行动作适应。15名患有DCD的成年人和15名发育正常（TD）的对照组人员通过了一系列根据身体大小缩放的通道尺寸（0.9 - 2.1倍肩宽）。在接近通道阶段和穿过通道时收集了动作的空间和时间特征。两组转动肩膀的决定方式不同，仅考虑身体大小时，患有DCD的成年人相比于TD成年人，在面对较大通道时转动的倾向更大。然而，当考虑到躯干侧向运动的程度和接近通道时的变异性时，我们不再看到两组之间存在差异。在动作适应方面，当需要转动肩膀时，患有DCD的成年人接近通道的方式不同，并且与他们发育正常的同龄人相比，他们会更快地调整动作。这些结果表明患有DCD的成年人有一种适应性策略，使他们能够考虑到自己的动作困难并避免碰撞。
