Department of Kinesiology, National Tsing Hua University, Hsinchu City, Taiwan; Research Center for Education and Mind Sciences, National Tsing Hua University, Hsinchu City, Taiwan.
Institutes of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan City, Taiwan.
Hum Mov Sci. 2023 Dec;92:103157. doi: 10.1016/j.humov.2023.103157. Epub 2023 Nov 11.
This study systematically examined ankle motion sense sensitivity and its relation to motor functions in children with and without a probable developmental coordination disorder (pDCD). Seventy-two children aged 10-11 years were recruited, including thirty-six children with pDCD and 36 age- and sex-matched typically developing (TD) children. Children placed their dominant foot on a passive ankle motion apparatus that induced plantar flexion of the ankle under nine constant velocities ranging between 0.15 and 1.35°/s. The adjusted movement detection time (ADT) to passive ankle motion was obtained to measure ankle motion sense sensitivity. The results showed that, in comparison to that in the TD group, ankle ADT was significantly increased by 22-59% for the range of velocities in the pDCD group. A correlation analysis showed that mean ADTs were significantly correlated with the manual dexterity (r = -0.33, p = 0.005) and balance (r = -0.24, p = 0.046) scores on the Movement Assessment Battery for Children (MABC-2) in the combined group. Similar correlations were found between the ADTs and the manual dexterity (r = -0.37, p = 0.028) and total motor (r = -0.34, p = 0.047) scores in the TD group. This study documents that ankle motion sense sensitivity to passive foot motion is reduced and is likely to contribute to poor motor performance in children with and without pDCD.
本研究系统地检查了踝运动感觉敏感性及其与有和无发育性协调障碍（pDCD）儿童运动功能的关系。招募了 72 名 10-11 岁的儿童，包括 36 名 pDCD 儿童和 36 名年龄和性别匹配的典型发育（TD）儿童。儿童将其优势脚放在被动踝关节运动仪器上，该仪器在 0.15 至 1.35°/s 之间的九个恒定速度下诱导踝关节跖屈。获得调整后的运动检测时间（ADT）以测量踝关节运动感觉敏感性。结果表明，与 TD 组相比，pDCD 组的 ADT 在 22%至 59%的速度范围内显著增加。相关性分析表明，在合并组中，平均 ADT 与儿童运动评估电池（MABC-2）中的手灵巧度（r = -0.33，p = 0.005）和平衡（r = -0.24，p = 0.046）得分显著相关。在 TD 组中，ADT 与手灵巧度（r = -0.37，p = 0.028）和总运动（r = -0.34，p = 0.047）得分之间也存在类似的相关性。本研究表明，对被动足部运动的踝运动感觉敏感性降低，可能导致有和无 pDCD 儿童运动表现不佳。
