下肢傷害是舞者較常見的運動傷害，而這些傷害通常會影響舞者表現，甚而進一步造成膝、踝、足關節之生物力學功能變化。我們都知道，透過生物力學分析深入瞭解及評估舞者動作技巧的正確性與代償機制是相當重要，惟目前對於這方面的研究仍嫌極少。因此，本研究主要目的在探討武舞中「雙飛燕」兩種不同空中姿態（直身式及前傾式）對於跳躍高度及著地衝擊之生物力學表現。整個測試是以一套EVaRT動作分析系統及兩塊測力板（單次跳躍以5Sec、500Hz、960Visible，連續跳躍以10Sec、500Hz、1200Visible 設定值）同步收取每式3次單次跳躍與3組連續四次跳躍動作，12名受測者（身高：159.50±2.31公分，體重：51.28±2.35公斤，年齡：20.04±2.52歲）參與本研究測試。資料處理以獨立樣本單因子變異數考驗，結果顯示：一、不同空中姿態「雙飛燕」單次跳躍及連續四次跳躍之平均高度，皆以前傾式較高；二、不同空中姿態「雙飛燕」單次及連續四次跳躍著地垂直反作用力之最大峰值，皆以前傾式較小；三、在左右腳的比較上，著地的衝擊皆以左腳較大；從動力學的觀點來看，右腳在著地時有較好的控制表現。

This study investigated the biomechanicsd of the different "Shuang-Fei-Yan" air postures (perpendicularity and anterior-tilt) jumping height and impact of landing. An EVaRT motion analysis system and two Kistler force platforms were used to collect data of single time and continuously four times jumps in three sets of twelve subjects. By means of the information, the biomechanical of "Shuang-Fei-Yan" can be better understood, can effectively be reduced because jumps cause lower extremity. After a statistical analysis with one-way ANOVA, the results indicated that: First, single time and continuously four times jumping the average height, are all higher by the anterior-tilt type. Second, single time and continuously four times jumping the vertical reacting force the biggest peak value, are all smaller by the anterior-tilt type. Third, in right-left comparison, the impact is bigger by the left leg. From the kinetics view-points, the rightleg had a better control throughout the landing.