Diet and bone status in amenorrheic runners.
Diet and bone status in amenorrheic runners.
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闭经跑步者的饮食和骨骼状况。
DOI：
10.1093/ajcn/43.6.910
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
W. Evans
中科院分区：
文献类型：
--
作者：
M. Nelson;E. Fisher;P. Catsos;C. Meredith;R. Turksoy;W. Evans
我们的目的是确定饮食、运动和闭经与受训年轻女性骨矿状况的关系。闭经患者腰椎骨密度明显低于月经正常的跑步患者。循环中的雌二醇值也显著降低。在身体成分、最大有氧功率或每周训练量方面，两组之间没有发现显著差异。一项为期3天的饮食记录显示，闭经妇女的每日能量摄入量显著减少，但钙的摄入量没有差异。82%的闭经妇女和35%的正常月经妇女的蛋白质摄入量低于美国推荐的膳食供给量。饮食行为异常可能与闭经的发生有关。我们的结果表明，当负重运动和低能量摄入与闭经相关时，年轻受训女性不利于大量骨量的增加。
Our purpose was to determine the relationship of diet, exercise, and amenorrhea with bone mineral status in trained young women. Bone mineral density of the lumbar spine was significantly lower in amenorrheic compared to normally menstruating runners. Circulating estradiol was also significantly lower. No significant differences between the two groups were found in body composition, maximum aerobic power, or amount of training per week. A 3-day dietary record showed that the amenorrheic women reported a significantly lower daily energy intake, but no difference in the calcium intake. Protein intake was less than the US Recommended Dietary Allowance in 82% of amenorrheic women and 35% of eumenorrheic women. Abnormal eating behaviors may be associated with the development of amenorrhea. Our results show that when weight-bearing exercise and a low energy intake are associated with amenorrhea, the accretion of a large bone mass in young trained women is not favored.