Publication:

序列性旋踢動作是否影響訊息處理的時間

本研究的主要目的為探討動作的複雜性對於訊息處理所需時間的影響。實驗的參與者為11名男性與6名女性跆拳道運動員，共17名。實驗參與者隨機完成3種動作難度任務，包括：滑步旋踢、滑步旋踢接後腳旋踢、滑步旋踢接後腳旋踢接360度旋踢等，每種難度動作執行6次。使用Biopac MP-150多通道訊號處理系統（2000 Hz）蒐集魚際肌的肌電訊號、加速度傳感器與外接燈源等資料，再以AcqKnowledge 4.2版計算動作前時間、動作時間、全部反應時間。經重複量數單因子變異數分析與HSD法事後比較後，結果發現三種難度動作前時間沒有差異（p > .05），而全部反應時間與動作時間，則皆顯示簡單難度動作的時間顯著小於高難度動作（ps < .05）。顯示在執行跆拳道連續踢擊動作時，接續的踢擊動作會在第1次踢擊過程中進行編序，因而延長了第1次踢的動作時間。

The purpose of this study was to investigate that reaction time increases as the complexity of the roundhouse kicks in taekwondo to be made increased. The voluntary participants were 11 males and 6 females, 17 in total, of taekwondo athletes. Using the simple reaction time paradigm, participants were asked to perform front leg roundhouse kick, back leg roundhouse kick following front leg roundhouse kick, and back leg roundhouse kick and turn around roundhouse kick following right roundhouse kick randomly. Every task performed 6 times. The BioPac system (MP150, 2000 Hz) with wireless EMG sensor and accelerometer were synchronized to record the signals of the process of movements. The AcqKnowledge version 4.2 was used to analyze premotor time, response time, and movement times. Repeated measure one way ANOVA and HSD post hoc were used to compare the duration difference of three movements with the alpha level .05. The result showed there were no difference in premotor time among three tasks (p > .05). But the movement durations and response times in complex tasks were longer than simple tasks (ps < .05). It indicated that the duration of first kick was delay to organize and to program the next kick during the serial kicks of taekwondo.