Rapid aimed limb movements: age differences and practice effects in component submovements.
Rapid aimed limb movements: age differences and practice effects in component submovements.
复制标题
快速目标肢体运动：年龄差异和子运动的练习效果。
DOI：
10.1037//0882-7974.9.2.325
复制
发表时间：
1994
影响因子：
3.7
通讯作者：
Abrams,RA
中科院分区：
文献类型：
--
作者：
Pratt,J;Chasteen,AL;Abrams,RA
两个实验报告中，年轻人和老年人练习快速有针对性的肢体运动向一个可见的目标区域。学生被要求尽可能快速准确地做动作。运动的细节进行了检查，以评估两组之间的组件子运动的差异，并确定由于实践的运动变化。结果表明，老年人产生的初始弹道子运动，具有相同的持续时间，但旅行距离较短的年轻的SS。此外，老年人产生的纠正次级submovements的持续时间和距离都比年轻的科目。随着实践，年轻的学生修改他们的子运动，但老年人没有修改他们的任务，即使经过广泛的实践。结果表明，老年人的运动机制与年轻人的运动机制有质的不同。（PsycInfo数据库记录（c）2016阿帕，保留所有权利）
Two experiments are reported in which younger and older adults practiced rapid aimed limb movements toward a visible target region. Ss were instructed to make the movements as rapidly and as accurately as possible. Kinematic details of the movements were examined to assess the differences in component submovements between the 2 groups and to identify changes in the movements due to practice. The results revealed that older Ss produced initial ballistic submovements that had the same duration but traveled less far than those of younger Ss. Additionally, older Ss produced corrective secondary submovements that were longer in both duration and distance than those of the younger subjects. With practice, younger Ss modified their submovements, but older Ss did not modify theirs even after extensive practice on the task. The results show that the mechanisms underlying movements of older adults are qualitatively different from those in younger adults.(PsycINFO Database Record (c) 2016 APA, all rights reserved)