PDF(Pubmed)
Abstract：
Reaction time (RT) is a widely used measure for testing physical performance in motor tasks. This study focused on assessing the processing speed in athletes. Twenty-five healthy volunteers were assigned to the control (n = 16) or athletes groups (n = 9). They were evaluated during motor reaction tasks based on visual stimuli and three difficulty conditions. Physiological measures were obtained from motion capture and electromyography recordings of several muscles. Two RT phases, decision-making (DMK) and electromechanical delay (EMD), were used to analyze the processing speed. The results show significant RT differences between groups. The athletes were ~30% faster compared to the control group. Despite the fact that all participants were right-handed, RT did not show any differences between hands performances in any group. However, DMK time revealed significant differences between the hands. Controls showed a longer DMK time for the right-hand election, ~20% more than the left, while athletes showed no such disparity. These findings reveal that quantifying the decision-making component of reaction time is crucial to assessing processing speed in sport. This approach could facilitate the monitoring of adaptations in both motor-cognitive and neuromuscular processes. The theoretical implications presented in this study offer perspectives on handedness research.
摘要：
反应时间（RT）是一种广泛用于测试运动任务中物理性能的方法。这项研究的重点是评估运动员的处理速度。25名健康志愿者被分配到对照组（n=16）或运动员组（n=9）。根据视觉刺激和三种困难条件，在运动反应任务中对它们进行了评估。从几块肌肉的运动捕捉和肌电图记录中获得生理测量。两个RT阶段，决策(DMK)和机电延迟(EMD)，用于分析处理速度。结果显示各组之间的显著RT差异。与对照组相比，运动员的速度快了约30％。尽管所有参与者都是右撇子，RT在任何组中的手表现之间均未显示任何差异。然而,DMK时间显示双手之间存在显着差异。对照显示，右侧选举的DMK时间更长，比左边多20%，虽然运动员没有表现出这种差距。这些发现表明，量化反应时间的决策部分对于评估运动中的处理速度至关重要。这种方法可以促进对运动认知和神经肌肉过程中的适应的监测。本研究提出的理论意义为惯用手研究提供了视角。
