Age-Related Differences in Stepping Response When Stepping onto a Known Soft Surface under Dual Task Conditions.
Age-Related Differences in Stepping Response When Stepping onto a Known Soft Surface under Dual Task Conditions.
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DOI：
10.1155/2010/701897
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发表时间：
2010
影响因子：
--
通讯作者：
Negoro S
中科院分区：
文献类型：
--
作者：
Harada N;Okada S;Negoro S
本研究的目的是调查是否年龄相关的差异，在步进反应影响姿势控制时，踩到一个已知的软表面在双重任务条件下。9名年轻女性和11名老年女性参加了会议。首先，他们踩在一个平面上，同时抓住一个空杯子（单任务），然后他们重复这个任务，同时抓住一个装满水的杯子（双任务）。在第二个实验中，他们在执行上述任务时踩在放在他们面前的柔软表面上。主要结果是，%DIP（启动阶段作为总步进任务时间的百分比）显着高于老年人在软表面上的双重任务比年轻人。总之，由于以往的经验，谨慎可能会增加注意力的需求，在双重任务，延长中枢神经处理所需的时间，以避免失去姿势稳定性的老年人，导致减少步速和步长相比，在年轻人。
The purpose of this study was to investigate whether age-related differences in stepping response influence postural control when stepping onto a known soft surface under dual task conditions. Nine young and eleven older female adults participated. First, they stepped on a flat surface while grasping an empty cup (single task), and then they repeated the task while grasping a cup filled with water (dual task). For the second experiment, they stepped on a soft surface placed in front of them while performing the above tasks. The main result was that %DIP (initiation phase as a percentage of the total stepping task time) was significantly higher for older than for young adults during the dual task on the soft surface. In conclusion, caution due to previous experience may increase attentional demand during dual tasks and lengthen the time required for central nervous processing in order to avoid losing postural stability in older adults, resulting in reductions in step velocity and step length compared to those in young adults.