Sprague R L, Deutsch K M, Newell K M
Department of Kinesiology, University of Illinois at Urbana-Champaign, Illinois, USA.
J Intellect Disabil Res. 2009 Sep;53(9):797-806. doi: 10.1111/j.1365-2788.2009.01193.x. Epub 2009 Jul 21.
The adaptation to the task demands of grasping (grip mode and object mass) was investigated as a function of level of developmental disability.
Subjects grasped objects of different grip widths and masses that were instrumented to record grip forces.
Proportionally, fewer participants from the profound compared with moderate and severe disability groups were able to complete the prehensile tasks. Nevertheless, all participants who completed the task showed adaptive grasping behaviour in terms of level and variability of force produced. There was higher absolute and relative force variability in low mass tasks that was enhanced with greater level of developmental disability.
The findings show task relevant adaptive grasping control with inhibition of force output at very-low-force conditions being the primary performance deficit of the profound disability group as a function of level of developmental disability.
研究了根据发育障碍程度对抓握任务要求（抓握方式和物体质量）的适应情况。
受试者抓握不同抓握宽度和质量的物体，这些物体配备了记录抓握力的仪器。
与中度和重度残疾组相比，极重度残疾组中能够完成抓握任务的参与者比例相对较少。然而，所有完成任务的参与者在产生的力量水平和变异性方面都表现出适应性抓握行为。在低质量任务中，绝对和相对力量变异性更高，且随着发育障碍程度的增加而增强。
研究结果表明，根据发育障碍程度，极重度残疾组的主要表现缺陷是在极低力量条件下抑制力输出的与任务相关的适应性抓握控制。
