IntroductionSimilar to the increases seen in athletic participation within the United States, female athletic participation continues to increase worldwide. An examination of the participation of women in the Olympic Games over the last century appears to support this. Female participation has steadily increased, most dramatically over the past 50 years. The most recent summer Olympics in Beijing (2008) saw the highest rate of female participation with a total of 4 746 women participating, representing a record 42% of athletes. Women remain underrepresented in sport in South Africa, but consistent and progressive rates of participation are being appreciated throughout the country. As rates of female participation continue to increase throughout the country, it is important to consider the unique health challenges that female athletes may encounter.For most female athletes, sports participation is a positive experience, providing improved physical fitness, enhanced selfesteem and better physical and mental health.1 However, this increased activity has also led to the emergence of a unique combination of medical problems and injuries specific to the female athlete. This includes a unique triad to conditions specific to the female athlete that include energy availability, menstrual function and bone mineral density.
DefinitionsIn 1992, the American College of Sports Medicine (ACSM) recognised the association of three distinct entities with female athletes. The female athlete triad was originally defined as the combination of disordered eating, amenorrhoea and osteoporosis found in physically active girls and women. 2 Further research since then proved these entities to be far too narrow in scope, existing only at the extreme endpoint of the disorder's spectrum. 3 By 2007, the ACSM revised position statement modified the three components of the triad into energy availability, menstrual function and bone mineral density. 4 Each of these components consists on a continuum from healthy to subclinical to pathological.Energy intake from diet is necessary for various physiological functions. Energy expenditure is the energy expended by the body during normal daily activities and exercise training. Energy availability defines the amount of energy remaining for physiological functions after expended from physical activity. Decreased caloric consumption and/or increased exercise energy expenditure results in low energy available for normal physiology functions, including cellular maintenance, thermoregulation, growth and reproduction.Clinical eating disorders, namely anorexia nervosa, bulimia nervosa and eating disorders not otherwise specified, exist on the extreme end of this category. However, these conditions carry a largely psychiatric component for diagnosis.5 A larger population of female athletes practise unhealthy eating and weight control behaviours with significant impact on their health without the psychiatric element. Such subclinical eating disorders include prolonged fasting, low caloric diets, binge eating, ...