Clinical Research Directory

Inclusion Criteria: * female sex, * age 16 to 35 years, * good general health condition and well-being, * regular menstrual cycles, * written informed consent to participate in the study before its commencement, * at least a high level of training status, * at least 4 years of training experience in basketball, * participation in at least 3 basketball-specific training sessions per week, * participation in at least 1 basketball game per week. Exclusion Criteria: * male sex, * use of hormonal contraceptives, * current injury or musculoskeletal condition limiting participation in training or competition, * health-related or medical contraindications, including menstrual disorders, planned pregnancy, or anemia, * use of supplements within 3 months before the study, except for regular use of protein supplements, carbohydrate supplements, or isotonic drinks, * failure to meet the study protocol assumptions or unwillingness to follow study procedures.