The purpose of this project is to study the impact of energy availability (EA) on female endurance athletes and the adaptive consequences of insufficient EA with a special reference to the impact on energy metabolism, reproductive-, vascular- and bone health as well as exercise capacity, neuromuscular performance, ability to recover from intense exercise and the genetic interaction. Specific aims: * To investigate the effects of EA on energy metabolism * To investigate the effects of EA on reproductive, vascular- and bone health, and endocrine functions * To investigate the effects of EA on exercise capacity * To investigate the effects of EA on neuromuscular performance * To investigate the effects of EA on recovery after exercise * To identify potential dietary factors influencing EA, exercise capacity and neuromuscular performance * To identify potential exercise factors influencing EA, exercise capacity and neuromuscular performance * To identify potential psychological, behavoural and motivational aspects associated with insufficient EA The investigators hypothesize that female athletes with insufficient energy availability have attenuated energy metabolism, reduced BMD, impaired endothelial function and decreased ability to recover between exercise bouts compared to matched controls with sufficient energy and nutrient intake. The investigators also hypothesize that EA influences exercise capacity and neuromuscular performance.
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Energy availability
Timeframe: Measurements performed once in the week after the two days of gynbaecological and physiological measurements