Jehu Deborah A, Desponts Alyssa, Paquet Nicole, Lajoie Yves
1School of Human Kinetics , and.
Int J Neurosci. 2015 Feb;125(2):100-6. doi: 10.3109/00207454.2014.907573. Epub 2014 May 8.
Flexible and appropriate allocation of attention resources is important during dual-tasking to achieve task goals while maintaining postural safety. This pilot study aimed to examine the influence of explicit prioritization of attention on the dual-task paradigm by employing two levels of difficulty for the postural tasks and reaction time (RT) tasks in healthy young adults. The task entailed standing on a force platform on two feet or on one foot, attending to posture or RT, and completing a simple or choice RT task. Participants verbally responded "top" as soon as the light cue illuminated. In general, attending to RT produced faster RTs (F(1,19) = 30.9, p < 0.001) and improved center of pressure (COP) Displacement (F(1,19) = 5.1, p < 0.05) and 95% Area Ellipse (F(1,19) = 7.1, p < 0.05). These findings suggest that prioritizing attention away from posture may be beneficial for postural performance when completing a second task.
在执行双重任务时，灵活且适当地分配注意力资源对于在保持姿势安全的同时实现任务目标非常重要。这项初步研究旨在通过对健康年轻成年人的姿势任务和反应时间（RT）任务采用两种难度水平，来检验明确的注意力优先级对双重任务范式的影响。该任务包括双脚或单脚站在测力平台上，关注姿势或反应时间，并完成简单或选择反应时间任务。一旦灯光提示亮起，参与者需口头回答“顶部”。总体而言，关注反应时间会产生更快的反应时间（F(1,19) = 30.9，p < 0.001），并改善压力中心（COP）位移（F(1,19) = 5.1，p < 0.05）和95%面积椭圆（F(1,19) = 7.1，p < 0.05）。这些发现表明，在完成第二项任务时，将注意力从姿势上转移开可能有利于姿势表现。
