本研究旨在在檢驗急性壓力對跆拳道學生運動員的選擇性注意力是否有負面影響，尤其對需有高認知負荷的認知作業情境下。本研究透過壓力指導語經由不可控制壓力源操弄過後，認知作業Stroop的表現是否變差正確率降低。本研究採組內設計，以28名跆拳道專長學生運動員為實驗參與者，經認知作業Stroop及事件關聯電位瞭解壓力對選擇性注意力歷程的影響，並藉由心跳變異性、Self-Assessment Manikin量表等進行壓力檢核。本研究壓力操弄成功在SMA量表情境主要效果達顯著p =.027，不過壓力強度仍然不足。本研究並未發現任何效果 (P3振幅)，不過發現正確率非一致低於一致，反應時間非一致長於一致，符合目前研究發現。最後，個體差異才是真正造成破壞認知表現的最關鍵要素 (不利自身想法、負面情緒以及動機)，未來研究除了需要盡可能避免參與者產生刻意讓自己冷靜不受壓力影響的行為，並能透過選手參與特定比賽的前夕進行實驗，以便更一步探討競賽壓力對運動員注意力的影響。
The current study investigated the influence of acute stress on harmful selective attention, especially in high perceptual load and exposure to uncontrollable stress (Pressure instruction). If disrupted performance on subsequent cognitively demanding tasks and exhausted cognitive resources (selective attention). Twety-eight taekwondo student athletes were administered a Stroop task, in a within-subject, using the ERP neuroelectric index to provide covert brain processes to understand acute stress on selective attention, and then two measurements to check the stress intervention (Heart rate variability and Self-Assessment Manikin questionnaire). The stress intervention was successful in the main effect of SMA scale situation have significant p =. 027, but intensity is still insufficient.This current study did not find any effect (P3 amplitude), but found the Accuracy concurrent higher inconcurrent, Reactiontime inconcurrent longer concurrent, these result was consistent with the present study findings. Finially, Stress intervention was successful, individual different was the main reason (Negative thoughts、Motivation and Participants produce deliberate unstressed behavior), future studies should be conducted to select the time points before the competion (high stress level), to further explore the effect of stress on athletes' attention.
