Brooks-Gunn J, Warren M P, Hamilton L H
Med Sci Sports Exerc. 1987 Feb;19(1):41-4.
Exercise-induced amenorrhea has received considerable attention in the medical literature. The combination of exercise and low body weight is thought to exert synergistic effects in the pathogenesis of amenorrhea, while the role of dieting and eating problems, another possible causative mechanism, has not been examined. A sample of 55 adult dancers in national and regional classical ballet companies was studied; their mean age was 24.7 yr. Fifty-six percent of the dancers had delayed menarche (age 14 or later) and 19% of the sample were currently amenorrheic (5 months or longer). One-third of the dancers reported having had an eating problem (self-reported anorexia nervosa or bulimia). Amenorrhea and reported eating problems were significantly related: 50% of amenorrheics reported anorexia nervosa while 13% of the normals did. In addition, prolonged amenorrhea was significantly related to dieting (as measured by EAT-26 scales, a measure of dieting behavior). As expected, leanness and absolute weight also were related to prolonged amenorrhea. Amenorrhea in this sample of adult dancers was not related to current activity level or age at which training began. Thus, eating problems may be one factor in the pathogenesis of prolonged amenorrhea in certain athletic groups.
运动性闭经在医学文献中受到了相当多的关注。运动和低体重的结合被认为在闭经的发病机制中发挥协同作用，而节食和饮食问题作为另一种可能的致病机制，其作用尚未得到研究。对国家和地区古典芭蕾舞团的55名成年舞者进行了抽样研究；她们的平均年龄为24.7岁。56%的舞者月经初潮延迟（14岁或更晚），19%的样本目前闭经（5个月或更长时间）。三分之一的舞者报告有饮食问题（自我报告的神经性厌食症或贪食症）。闭经与报告的饮食问题显著相关：50%的闭经者报告患有神经性厌食症，而正常人群中这一比例为13%。此外，闭经时间延长与节食显著相关（通过EAT - 26量表测量，这是一种节食行为的测量方法）。正如预期的那样，消瘦和绝对体重也与闭经时间延长有关。在这个成年舞者样本中，闭经与当前的活动水平或开始训练的年龄无关。因此，饮食问题可能是某些运动群体中闭经时间延长发病机制的一个因素。
