本研究目的在探討以游泳推進功率及推進距離預測不同等級蛙泳選手划手、蹬夾 腿及協調效率。 以臺北市游泳代表隊男性 36 位選手為研究對象， 依據選手最近三個月內 100 公尺蛙泳最佳成績之優劣順序，分成三個等級，每一個等級均有 12 位選手，並以重複 量數「對抗平衡法」分別進行聯合、划手及蹬夾腿三種動作做推進功率與推進距離之測量。 其結果經分析討論後，得到下列結論： 1. 推進功率與推進距離的兩種實驗方法再測信度達.76 至.99 之間， 今後研究與本實驗相 關的測量方法只要測量一次即可。 2. 各項推進功率與推進距離之間，可以相互預測成績。 3. 由於 B 級選手優於 C 級選手的主要原因在於划手、蹬夾腿及協調效率的差異， C 級蛙 泳選手如果想晉升為 B 級選手， 訓練的重點應針對划手、蹬夾腿及協調效率方面進行改善 。 4. 本研究結顯示 A 級選手優於 B 級選手的主要原因在於划手及蹬夾腿推進功率及推進距 離的差異，B 級蛙泳選手如果想晉升為 A 級選手， 除了加強協調效率之外，訓練的重點應 針對划手及蹬夾腿方面進行改善。

　　　　　The purpose of this study was to use propulsive power and propulsive distance to predict the arm stroke, frog kick, and corrdination efficiency among different levels breaststroke swimmers. The 36 male who were the swimming team members of Taipei served as the subjects of this study. There were three levels according to those swimmers' best 100 meters breaststroke performances during the last three months. Each level included 12 swimmers. The "counter-balancing" repeated measures were used to measure the propulsive power and propulsive distance performances of the coordination, arm stroke, and frog kick. The following results were found under this study: 1. The test-retest reliabilities of the propulsive power and propulsive distance were between 0.76 to 0.99. According to the reuslts, only test once will be enough for future related studies. 2. Each propulsive power and propulsive distance could be used to predict each other's performance. 3. Level B swimmers' arm stroke, frog kick and coordination efficiency performances were better than those of level C swimmers. Therefore, if level C swimmers wanted to become level B swimmers, their training should emphasize these three items. 4. Level A swimmers ' propulsive power and propulsive distance performances of the arm stroke, frog kick were better than those of level B swimmers. As a result, if level B swimmers wanted to become level A swimmers, their training should emphasize these items.