The special issue is planned to offer the effective reports concerning stress problems of athletes. The first report deals mainly with the female athlete triad (FAT) that arises from constant and intense exercise, daily dietary restrictions and psychological stress. The second paper proposes to use physiological indicators such as cortisol, indicator of the endocrine system, for estimating the training load of athletes. These kind research, psychoneuroendocrinoimmunological approach, give effective data to control stress of athletes. Third one concerns with consultation for elite athletes. It involves important topics for sport performance, such as consultants competency, resilience, and team resilience. The last article compares the mindfulness acceptance-commitment approach with the psychological skill training. These topics would discuss on the points of their effectiveness and usefulness for Olympiad 2020.