本研究目的在瞭解2012年倫敦奧運中華跆拳道代表隊女子銅牌選手曾櫟騁，在比賽時所運用的攻擊型態及得分、失分情況。本研究方法採用錄影系統觀察法，針對四場比賽過程，將所得資料量化分析並以敘述統計描述各種攻擊動作。研究結果為：一、主被動攻擊型態方面：被動攻擊（64.29%）高於主動攻擊（35.71%）。二、攻擊得分區分中端及上端兩部位：以中端而言，旋踢高於後踢、滑步側踢及前踩；以上端而言，下壓踢、內掛下壓踢高於後旋踢。三、主被動攻擊得分方面：被動攻擊得分高於主動攻擊。四、攻擊型態與得失分方面：得分為28分，後腳、手得分高於前腳、手得分，達顯著差異；右腳、手攻擊得分數高於左腳、手攻擊得分數，達顯著差異。失分以主動右前腳滑步側踢及主動右前腳上端側踢攻擊失分數最高。本研究結論：對戰站姿以右前左後腳較易失分，建議以左前右後腳站姿較佳，防止被對手的右前腳突襲；且在左腳攻擊方面僅以左後腳旋踢較具得分能力，應加強左前後腳上端及轉身動作。

This case study was aimed to understand the attacking techniques and points gaining or losing situations of Li-Cheng Tseng, a female Taekwondo bronze medalist for Chinese Taipei in the 2012 London Olympics. Video observation system was used to analyze four competition progresses, and obtained quantitative data was analyzed using descriptive analysis for different kinds of attacking techniques. The results showed that (1) For the attack patterns, the rate of defensive attacks (64.29%) were higher than offensive attacks (35.71%). (2) The attacking area, where points were given was differentiated into body and head parts. For the body part, the rate of turning kicks were more than back kicks, front leg side-kicks and side-kicks, whereas for the head part, the rate of axe kicks (downward kicks) and crescent kicks (inside downward kicks) were more than spinning kicks. (3) The rate of points obtained was higher in defensive mode compared to offensive mode. (4) Total gained points were 28, the attacks using leg and hand at the back during fighting stance were significantly higher than attacks using front leg and hand. The rate of points gained was higher for right leg and hand attacks compared to the left leg and hand attacks. Points lost occurred mostly during offensive right front leg side-kick and offensive right front leg sidekick towards the head. This study concludes that points lost occurred easier while in a fighting stance of right leg at the front and left leg at the back, which suggests that a fighting stance of left leg at the front and right leg at the back may be better to avoid the sudden attack by right front leg of the opponent. We further observed that left turning kick was more potential for gaining the points, therefore left leg head attack regardless of front or back should be strengthened in fighting stance and spinning movements.