The aim of this work is to investigate the findings of studies that studied the effects of different phases of the menstrual cycle on training performance and sports performance in the female population. This overview contains a general description of the menstrual cycle and its phases and the physiological changes that accompany each of these phases. Sports performance and training in women were analyzed with regard to several selected parameters important for female athletes. Such as sleep, diet and injuries that accompany various changes with respect to the phase of the menstrual cycle. The paper mentions various hormonal changes that affect the female organism, i.e. organ systems, and in this way the consequences are maintained in sports performance. The greatest effect is reflected in the fluctuation of the hormones estradiol, that is, estrogen and progesterone, the number of which increases or decreases with regard to the follicular and luteal phase in the menstrual cycle. Considering the findings of previous studies, it has been shown that the impact in women with eumenorrhea is very small, almost negligible. Also, most studies only looked at one phase of the menstrual cycle. The follicular phase is considered to be the one where more noticeable changes in performance occur. There are often disagreements between several different studies. Some of it is due to poorer and lower quality research implementation, and some of it is due to less available data. Considering the analysis of this paper, it can be said that there is still no concrete and solid evidence that would confirm the issue of a significant influence of the phases of the menstrual cycle on sports performance and training, but regardless of that, and considering that the interest in this topic is increasing, almost all sources agree that each athlete should be approached individually due to the dependence of top results and small nuances that can determine the same.