The article presents the results of a study of changes in bioimpedance body composition (body weight, muscle and fat components, water, bmi) of qualified swimmers aged 15-17 years, depending on the phases of the menstrual cycle (menstrual, postmenstrual, ovulatory, postovulatory and premenstrual). According to the results, it turned out that the average values of each indicator are tied to a specific phase of the cycle and, therefore, are quite variable. The female cycle has a great influence not only on well-being, but also on mood. This is due to hormonal fluctuations, which, according to the results of the study, affect the considered indicators, since their change is cyclical and has periods of increase and decline.
training process, transition period, qualified swimmers, menstrual cycle, cycle phases, swimming
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