Effect of Different Sex Hormone Profiles for the Response to Physical Training

The human study is designed as a prospective study where 3 groups with different sex hormonal profiles are followed in parallel in 4 months and tested before, during (2 months) and after 4 months of physical training intervention. The three groups include a control group with regular menstrual bleeding and two groups who have an altered sex hormonal profile due to use of either IUD (containing the progestin levonorgestrel) or mini pills (containing the progestin desogestrel). Before and after the training period the following will be measured/collected: Body composition, Dietary intake, Physical Activity Level, Blood, Urine, Muscle Tissue, Adipose Tissue, Aerobic capacity in bike test, Strength and muscle function tests, and questionnaires about diet and physical activity.