目的：探討後勾踢與後踢動作之特徵與差異。方法：以8名大專男子跆拳道選手為研究對象，每位參與者皆執行後勾踢與後踢動作。使用VICON高速攝影機收集資料，以Kwon3D XP動作分析系統進行資料處理，進一步獲得踢擊動作之運動學數據，以Dae Do電子護具計分系統收集踢擊力量。以相依樣本t檢定比較後勾踢與後踢的踢擊動作運動學參數與踢擊力量之差異，以皮爾遜積差相關分析後勾踢的踢擊動作運動學參數與踢擊力量之關係。結果：兩種動作的踢擊速度及踢擊力量皆未達顯著差異，但後勾踢的動作時間顯著大於後踢。後勾踢在各時間點的攻擊腿膝關節角度皆顯著大於後踢；此外，後勾踢的攻擊腿膝關節、攻擊腿與支撐腿兩腿間夾角、以及軀幹旋轉的最大角速度等參數皆顯著小於後踢；後勾踢的攻擊腿膝關節最大角速度出現時機顯著慢於後踢。結論：後勾踢與後踢的整體踢擊動作模式相似，主要差異在於攻擊腿膝關節動作。若要快速反擊時，適合採用後踢；若對手特性為喜好攻擊上端時，則適合採用後勾踢。

Purpose: To explore the characteristics and differences of kicking action of back hook kick (BHK) and back kick (BK). Methods: Eight male collegiate taekwondo athletes were selected as the research subjects, and each participant performed BHK and BK. The Vicon, Kwon3D Motion Analysis System and the Dae Do Electronic Protective Gear Scoring System were used to collect the kinematic parameters and the kicking force data of the kicking actions. The dependent sample t test was used to compare the kicking action kinematic parameters and kicking action force between BHK and BK. The Pearson product-moment correlation coefficient was used to analyze the relationship between the kinematic parameters and kicking force of BHK and BK. Results: There was no significant difference in the kicking speed and force between BHK and BK, but the action time of the BHK was significantly longer than that of the BK. The knee angle of attacking leg of BHK at each key time point was significantly greater than that of the BK. The maximum angular velocity of the knee joint of attacking leg, the maximum angular velocity of the angle between the attacking leg and the supporting leg, and the maximum angular velocity of the trunk rotation of were all significantly lower than those of the BK. The timing of the maximum angular velocity of the angle between the attacking leg and the supporting leg of BHK was significantly longer than that of the BK. Conclusion: The kicking action pattern of the BHK is similar to that of the BK. The main difference is the movement of the knee joint of the attacking leg. When counter attack quickly, the BK is preferred. If the opponent’s characteristics are to attack the upper side, the BHK is preferred.