捷泳臨界划頻之應用研究 摘要 目的:本研究欲探討游泳臨界划頻 (critical stroke rate, CSR) 與划手特性、捷泳運動表現、耐力表現之相關程度;尋求最簡易計算臨界划頻之方法。方法:本研究透過一台數位攝影機,拍攝全國Mizuno盃分齡游泳錦標賽、全國arena盃分齡游泳錦標賽、全國中等學校運動會及全國大專校院運動會,同時有100M、200M及400M自由式參賽選手,共33名。利用影片計算各選手划手次數及成績紀錄,依 ∑▒〖(Ti-MT)(Ni-MN)〗/∑▒〖(Ti-MT)〗^2 計算不同距離組合之臨界划頻 (50M與100M; 50M與200M; 50M與400M; 100M與200M; 100M與400M; 200M與400M; 50M、100M、200M與400M)。結果:臨界划頻與50M、100M、200M及400M划幅有顯著的負相關,臨界划頻越低,划幅會有比較長的趨勢; 臨界划頻與50M、100M、200M及400M捷泳成績及臨界速度均未達顯著相關; CSRall與CSR51、CSR52、CSR54、CSR12、CSR14及CSR24皆有顯著相關(r= 0.44~ 0.99, p< .05),但CSRall僅與CSR12未達顯著差異,其餘皆有達顯著差異。結論:選手及教練可以知道臨界划頻較低的選手,會有較長的划幅,但無法看出其與成績及臨界速度間的關係。未來在執行臨界划頻的資料取得時,可以不用再進行繁複的多種距離測驗,100M、200M組合即可簡單的評估臨界划頻。 關鍵字:游泳、划手次數、游泳能力評估
Applied research of front craw critical stroke rate Abstract Purpose: Thesis of this study was to investigate the relationships between critical stroke rate (CSR) and front crawl performances stroke length and CSS. This study also tried to obtain a simple and effective method to measure CSR in a shorter distance. Method: This research collected the data of competitive events, swimming events, by a video camera. The film data include the 50-m, 100-m, 200-m and 400-m front craw competition processes. This research use the video to record the number of stroke cycles and swimming performance, to calculate the critical stroke rate with different distances (CSR51, CSR52, CSR54, CSR12, CSR14, CSR24andCSRall). Result: (1) 50M, 100M, 200M and 400M SL have significant negative correlation with CSR; (2) 50M, 100M, 200M, 400M front crawl performance and the CSS did not reach significant correlation with CSR; (3) CSR51, CSR52, CSR54, CSR12, CSR14, and CSR24 all significant correlation with CSRall (r = 0.44 ~ 0.99, p <.05). Conclusion: Swimmer and coaches will know that the lower CSR and SL will being lower too. But cannot see the relationship between CSR and front crawl performance and the CSS. At last, we won't use the complex test to get the CSR, there have the simple way to get CSR by using the 100M and 200M test. Keywords: swimming, number of stroke cycles, anthropometric