本研究目的探討游泳選手比賽前、後測驗100公尺捷泳，在運動成績、運動技術與心跳率變化情形與差異性。研究方法測量受試者安靜心跳率，配戴心跳帶（Polar S725）測驗100公尺捷泳，進行成績、划頻、划幅、划距及心跳率之紀錄。以SPSS統計軟體，進行描述性統計和相依樣本t檢定，顯著水準為p<.05。研究結果前、後50公尺運動成績和運度技術無顯著差異，心跳率前50公尺（T=-2.51, p=.02<.05）和恢復1分鐘（T=2.14, p=.05）達顯著差異，分段成績0~10公尺（T=2.63,p=.02<.05）達顯著差異。其餘各項測驗項目與成績進行相關性考驗發現運動成績、划頻、划幅、划距、安靜心跳率、實際最大心跳率達顯著相關。結論游泳比賽前後之運動成績、運動技術並無顯著差異，心跳率在最大心跳與恢復皆因比賽而有所改變。

　　The purpose of this study was to explore the different in technique-related variation, result before and heart rate before and after during competition period. Method: Using rest heart rate and 100meters free style swimming test. During 100M free style test, digital camera will take record whole exercise for the swimming speed, stroke rate, stroke length and heart rate. Using SPSS statistics software to describe all test result, depend sample t-test compare the different between before and after competition. All test significant different level was p<.05. Result: There were significant different between before and after competition in swimming 100 meters results and Technique-related, in heart rate during whole movement it shows that in first 50 meter and recovery in after exercise 1min have significant different. In analysis of correlation, it shows that swimming result, swimming speed, stroke rate, stroke length, resting heart rate, actual maximum heart rate have significant correlation. Conclusion: There were no significant different during competition period in Technique-related and swimming result. The heart rate will significant different in maximum and recovery heart rate.