Myburgh K H, Berman C, Novick I, Noakes T, Lambert E
Bioenergetics of Exercise Research Unit, Department of Physiology, University of Cape Town Medical School, South Africa.
Int J Sport Nutr. 1999 Sep;9(3):285-94. doi: 10.1123/ijsn.9.3.285.
We studied 21 ballet dancers aged 19.4 +/- 1.4 years, hypothesizing that undernutrition was a major factor in menstrual irregularity in this population. Menstrual history was determined by questionnaire. Eight dancers had always been regular (R). Thirteen subjects had a history of menstrual irregularity (HI). Of these, 2 were currently regularly menstruating, 3 had short cycles, 6 were oligomenorrheic, and 2 were amenorrheic. Subjects completed a weighed dietary record and an Eating Attitudes Test (EAT). The following physiological parameters were measured: body composition by anthropometry, resting metabolic rate (RMR) by open-circuit indirect calorimetry, and serum thyroid hormone concentrations by radioimmunoassay. R subjects had significantly higher RMR than HI subjects. Also, HI subjects had lower RMR than predicted by fat-free mass, compared to the R subjects. Neither reported energy intake nor serum thyroid hormone concentrations were different between R and HI subjects. EAT scores varied and were not different between groups. We concluded that in ballet dancers, low RMR is more strongly associated with menstrual irregularity than is current reported energy intake or serum thyroid hormone concentrations.
我们研究了21名年龄在19.4±1.4岁的芭蕾舞演员，假设营养不良是该人群月经不规律的主要因素。月经史通过问卷调查确定。8名舞者月经一直规律（R）。13名受试者有月经不规律史（HI）。其中，2名目前月经规律，3名周期短，6名月经过少，2名闭经。受试者完成了一份称重饮食记录和一份饮食态度测试（EAT）。测量了以下生理参数：通过人体测量法测量身体成分，通过开路间接量热法测量静息代谢率（RMR），通过放射免疫分析法测量血清甲状腺激素浓度。R组受试者的RMR显著高于HI组受试者。此外，与R组受试者相比，HI组受试者的RMR低于根据去脂体重预测的值。R组和HI组受试者报告的能量摄入量和血清甲状腺激素浓度均无差异。EAT得分各不相同，两组之间没有差异。我们得出结论，在芭蕾舞演员中，低RMR与月经不规律的关联比目前报告的能量摄入量或血清甲状腺激素浓度更强。
