本研究目的在探討男女選手捷泳划手打腿及協調效率之差異研究， 以臺北市高中 男子選手 11 位（平均身體 171.23 ± 5.74 公分， 體重 65.27 ± 6.59 公斤， 年齡 15.98 ± 0.86 年， 游泳訓練年數 6.41 ± 2.01 年）， 女子選手 13 位（平均身高 162.46 ± 4.96 公分， 體重 55.85 ± 4.72 公斤，年齡 16.25 ± 0.88 年，游泳訓練年 數 6.69 ± 1.55 年）為研究對象，採用複量數之「對抗平衡法」分別進行不同推進距離捷 泳聯合、划手及打腿三種方式之測量，受試者從蹬壁出發之後，以最大努力捷泳動作向前游 進（划手測驗時腳夾浮球，打腿測驗時手持浮板）。結果發現男女捷泳選手在打腿的推進力 及協調效率方面，沒有顯著差異。但在手臂划手推進力方面，男子選手（ 0.83 ± 0.04 公 尺╱秒）顯著的優於女子選手（ 0.72 ± 0.06 公尺╱秒），也是男子選手游泳成績優於女 子的主要原因。結論與建議：造成男子游泳成績表現優於女子的原因是因男子的划手推進力 較佳，或許這與上身及手臂之肌力有關聯。此結論也意指著如果女子選手能在手臂的訓練上 特別加強，也許成績可以趕上男子選手。

　　　　　This study investigated the difference of coordination efficiency between male and female crawl swimmers. The subjects studied are 11 male swimmers (age 15.98 ± 0.86, height 171.23 ± 5.74cm., body weight 65.27 ± 6.59 kg., and years of training 6.41 ± 2.01 yrs.) and 13 female swimmers (age 16.25 ± 0.88, height 162.46 ± 4.96cm., body weight 55.85 ± 4.72 kg., and years of training 6.69 ± 1.55 yrs.). Both the male and female swimmers are students from high schools in Taipei City. An identical subject with repeated measure design and a balanced-order testing sequence were used to measure the arm stroke (AS), leg kick (LK), whole stroke (WS), and the coordination efficiency fo these swimmers. In arm stroke testing, the weimmers had buoy between their legs; in leg kick testing the swimmers has kick board in their hands. The results are as follows: There is no significant difference in LK propulsion and coordination efficiency between the male and female subjects. In AS propulsion, however, the male swimmers (0.83 ± 0.04 m/sec) were much better than the female (0.72 ± 0.06 m/sec). This is the major reason why male swimmers swim faster than female swimmers. Conclusions and suggestions: The major reason for male swimmers to swim faster than female swimmers is that they have better AS propulation. This is perhaps due to their stronger arm muscles and breast muscles. This means that training female swimmers' arm muscles can make them swim as fast as male swimmers.