Under intense pressure from coaches, parents, teammates - often
even themselves - to lose weight, many young athletes slip into
disordered eating which can lead to menstrual irregularities and
bone loss, jeopardizing their health and placing them at risk for
premature osteoporosis. WomenSport International has appointed a
Task Force to educate athletes and those responsible for their welfare
about the dangers of this Triad of health problems.
Weight loss does not necessarily ensure improvement in athletic
performance. Muscle mass as well as fat is lost during extreme dieting
and performance may actually deteriorate. Other side-effects of
poor nutrition such as fatigue, anemia, electrolyte abnormalities,
and depression can also contribute to a poor performance. Although
many coaches now realize that body composition measurements provide
better information than body weight alone, most do not realize that
these measures are far from precise and that holding all athletes
to a single standard for body fat can have serious repercussions.
Pressuring athletes to achieve an unrealistic weight loss ignores
individual variability in body habitus and often leads to disordered
eating.
Although not all athletes with eating problems meet the strict
criteria for bulemia or anorexia, the number of females who exhibit
restrictive eating behavior is estimated to range between 15 and
62% depending on the sport. There appears to be a continuum of disordered
eating within the athletic population ranging from poor nutrition
to clinical pathology. All points along this continuum can have
serious consequences for the athlete's health. For those athletes
who progress to anorexia or bulemia those consequences include serious
medical complications and even death.
While a common symptom of anorexia nervosa in women is amenorrhea
(absence of menses), menstrual irregularities can occur in the absence
of an eating disorder. As a result of the high energy demands of
exercise, athletes may be energy deficient even while consuming
meals considered normal for healthy nonathletes. While the precise
etiology of amenorrhea and oligomenorrhea (irregular menses) has
yet to be determined, it is possible that even seemingly minor deficits
between caloric expenditure and caloric intake may play a role.
Stress, such as the pressure to meet impossible weight standards,
may also be a factor. What is certain is that the prevalence of
amenorrhea among athletes is high, ranging from 10 to 45% depending
on the sport, and the consequences can be serious.
Amenorrhea is usually an overt sign of a decrease in estrogen production.
In most amenorrheic athletes estrogen levels drop to postmenopausal
levels and there is a significant decrease in bone mass. This loss
of bone mineral density (BMD) is usually first observed in the spine
but, if the amenorrhea is prolonged, bone loss can occur in other
parts of the skeleton as well. Early studies suggested that with
the resumption of menses some of the bone could be regained, but
more recent studies report that recovery of bone is limited and
some of the loss may be irreversible. The spinal density of some
young athletes is similar to that of women in their 70's and 80's
and may never return to normal. Evidence is mounting that these
athletes are at increased risk for stress fractures and more serious
fractures of the pelvis, hip, and spine. What the future holds for
these women is uncertain, but there is great concern about the potential
for premature osteoporotic fractures as these women age.
Girls and women should be encouraged to realize the full physiological,
social, and psychological benefits of sport and physical activity
and should be encouraged to strive for excellence. However, pressure
to meet unrealistic weight standards which ignores the consequences
for the athlete should not be tolerated. Among the priorities of
the WSI Task Force are the education of athletes, coaches, parents,
and sports governing bodies about the Female Athlete Triad, distribution
of guidelines for physicians to follow in the preparticipation physical
examination of female athletes, establishment of standards of conduct
for those responsible for coaching and training, women, and encouragement
of research into the etiology of the amenorrhea associated with
sport.