Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, 6627 Belo Horizonte, CEP 31270-901 MG, Brazil.
Minas Tenis Clube, R. Bahia, Belo Horizonte, CEP 30160-012 MG, Brazil.
Hum Mov Sci. 2014 Feb;33:85-96. doi: 10.1016/j.humov.2013.08.007. Epub 2013 Sep 18.
Children with developmental disorders such as cerebral palsy have limited opportunities for effortful interactions with objects and tools. The goal of the study was to investigate whether children with cerebral palsy have deficits in their ability to perceive object length by dynamic touch when compared to typically developing children. Fourteen children with typical development and 12 children with cerebral palsy were asked to report the length of hand-held rods after wielding them out of sight. Multilevel regression models indicated that I1 (maximum principal moment of inertia) was a significant predictor of perceived length - LP (p<.0001). The effect of I1 on LP was significantly different among children (p=.001) and the presence of cerebral palsy (group factor) partially explained such variance (p=.002). In addition, accuracy and reliability of the length judgments made by children with cerebral palsy were significantly lower than the typically developing children (p<.05). Theoretical and clinical implications of these results were identified and discussed.
患有脑瘫等发育障碍的儿童与物体和工具进行费力互动的机会有限。本研究的目的是调查与正常发育儿童相比，脑瘫儿童在通过动态触觉感知物体长度的能力上是否存在缺陷。14 名正常发育儿童和 12 名脑瘫儿童在将手持棒移出视线后，被要求报告棒的长度。多层次回归模型表明，惯性矩 I1（最大主惯性矩）是感知长度 LP 的一个显著预测因子（p<.0001）。I1 对 LP 的影响在儿童中存在显著差异（p=.001），脑瘫的存在（组间因素）部分解释了这种差异（p=.002）。此外，脑瘫儿童做出的长度判断的准确性和可靠性明显低于正常发育儿童（p<.05）。确定并讨论了这些结果的理论和临床意义。
