Department of Physiotherapy, Neuropediatrics Sector, Federal University of São Carlos, Brazil.
Res Dev Disabil. 2011 Jan-Feb;32(1):246-52. doi: 10.1016/j.ridd.2010.09.023.
Reaching and grasping skills have been described to emerge from a dynamic interaction between intrinsic and extrinsic factors. The purpose of the present study was to investigate the interaction between such an intrinsic factor, Down syndrome, and extrinsic factors, such as different object properties. Seven infants with Down syndrome and seven infants with typical development were assessed at the ages of 4, 5 and 6 months. The findings showed that object size influenced the kinematics of reaching for the infants with Down syndrome and the grasping frequency for the typical infants. The object rigidity was shown to have a major influence on grasping frequency.
抓握技能被描述为内在和外在因素之间动态交互的结果。本研究旨在探讨内在因素唐氏综合征与外在因素（如不同物体属性）之间的相互作用。七个唐氏综合征婴儿和七个典型发育婴儿在 4、5 和 6 个月时进行了评估。结果表明，物体大小影响唐氏综合征婴儿的伸手运动学，而对典型婴儿的抓握频率产生影响。物体硬度对抓握频率有重大影响。
