Postural adjustment errors during lateral step initiation in older and younger adults.
Postural adjustment errors during lateral step initiation in older and younger adults.
复制标题
老年人和年轻人在横向迈步开始时的姿势调整错误。
DOI：
10.1007/s00221-014-4081-z
复制
发表时间：
2014
影响因子：
2
通讯作者：
Furman,JosephM
中科院分区：
文献类型：
--
作者：
Sparto,PatrickJ;Fuhrman,SusanI;Redfern,MarkS;Perera,Subashan;RichardJennings,J;Alghwiri,AliaA;Furman,JosephM
目的是检验年龄差异和不同水平的阶跃反应抑制对自愿侧向阶跃启动任务的影响。70名老年人(70-94岁)和20名年轻人(21-58岁)根据箭头的方向和空间位置执行视觉提示的步骤启动条件，范围从简单的选择反应时间任务到包括关于前进方向的不协调线索的知觉抑制任务(例如，监视器右侧出现一个左指向的箭头)。姿势调整错误和步态潜伏期的证据是从步行腿施加的垂直地面反作用力记录的。与年轻人相比，老年人在步态行为上表现出更大的变异性，在需要抑制的条件下产生更多的姿势调整错误，并且有更大的步长启动潜伏期，随着条件的抑制要求变得更大，该潜伏期增加得比年轻人更多。步进式任务绩效与临床平衡测试绩效的相关性大于执行功能任务绩效。
The purpose was to examine age differences and varying levels of step response inhibition on the performance of a voluntary lateral step initiation task. Seventy older adults (70–94 years) and twenty younger adults (21–58 years) performed visually cued step initiation conditions based on direction and spatial location of arrows, ranging from a simple choice reaction time task to a perceptual inhibition task that included incongruous cues about which direction to step (e.g., a left pointing arrow appearing on the right side of a monitor). Evidence of postural adjustment errors and step latencies were recorded from vertical ground reaction forces exerted by the stepping leg. Compared with younger adults, older adults demonstrated greater variability in step behavior, generated more postural adjustment errors during conditions requiring inhibition, and had greater step initiation latencies that increased more than younger adults as the inhibition requirements of the condition became greater. Step task performance was related to clinical balance test performance more than executive function task performance.