隨著各項競技運動女性參與比例的提高，有越來越多的學者投入運動訓練對女性生理週期之影響的研究。研究者長期於大專院校教授柔道與防身術課程，並擔任柔道隊教練，於授課期間發現經常有女學生因生理週期所帶來的不適請病假；而所指導的柔道隊隊員表示，在學習柔道之後生理週期異常的狀況獲得改善，她們促使研究者思考：柔道對女性運動員生理週期的影響是什麼？生理期間是否可以參加柔道訓練？這些都是在柔道教學實務過程中所會面臨的問題。本研究旨在闡述柔道訓練對女性運動員的生理週期異常的影響以及生理期間參加柔道訓練的情況。研究方法以文獻分析法為主，問卷調查為輔，問卷調查的對象為北部大專校院柔道隊乙組46名女子選手，平均年齡21.6（±2.354）歲，平均參與時間2.65（±3.11）年。結果顯示：一、柔道運動對女性運動員生理週期的影響較其他運動項目來得小。二、柔道運動員在月經期間參與訓練的比例偏高。

As the proportion of female participation in sports has risen, more and more scholars are doing research on the effect of women menstruation in sport training. Researcher who have long term experience as instructor in Judo Course, Self-defense courses, and also as Judo team coach in university, found that female students are often taking sick leave in training period due to the discomfort caused by menstruation; female team members said that the effect of menstruation become much better after the training, this finding prompted researchers to pondering over: how will judo affect menstrual period on female athletes? Whether they can participate Judo training in menstrual period? These are the problems that have to be face in the process of Judo instructional. The purpose of this research was to expound the effect that caused by the menstrual period circumstances of women athletes in Judo training. Research methods are based on literature analysis, questionnaire as supplement, questionnaire survey targeted at 46 University female Judo team members. The results showed that: 1. Impact of menstrual period on female Judo athletes are much smaller than other sports. 2. In judo, the participation rate of female Judo athletes is still high even during menstrual period.