Singh A, Deuster P A, Moser P B
Department of Military Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814.
J Sports Med Phys Fitness. 1990 Mar;30(1):29-36.
Zinc and copper status of 33 eumenorrheic and 12 amenorrheic runners and 19 eumenorrheic and 8 amenorrheic nonrunners was studied. Three-day diet records and fasting blood samples were collected and analyzed. No indices of zinc or copper status differed as a function of menstrual status. Although zinc intakes of runners tended to be higher than nonrunners, plasma zinc concentrations tended to be lower. Runners had significantly higher erythrocyte zinc concentrations than nonrunners (12.4 +/- 0.2 vs 11.5 +/- 0.3 micrograms/g; p less than 0.05). Copper intakes of runners also tended to be higher than nonrunners. Mean plasma copper concentration of runners was significantly higher than nonrunners (18.8 +/- 0.5 vs 16.1 +/- 0.6 mumol/L; p less than 0.01) but erythrocyte copper was significantly lower (1.06 +/- 0.02 vs 1.26 +/- 0.03 micrograms/g; p less than 0.01). The observed differences between runners and nonrunners suggest that chronic exercise may induce redistribution of zinc and copper.
对33名月经正常和12名闭经的跑步者以及19名月经正常和8名闭经的非跑步者的锌和铜状态进行了研究。收集并分析了三天的饮食记录和空腹血样。锌或铜状态的指标没有因月经状态而有所不同。虽然跑步者的锌摄入量往往高于非跑步者，但血浆锌浓度往往较低。跑步者的红细胞锌浓度显著高于非跑步者（12.4±0.2对11.5±0.3微克/克；p<0.05）。跑步者的铜摄入量也往往高于非跑步者。跑步者的平均血浆铜浓度显著高于非跑步者（18.8±0.5对16.1±0.6微摩尔/升；p<0.01），但红细胞铜显著较低（1.06±0.02对1.26±0.03微克/克；p<0.01）。跑步者和非跑步者之间观察到的差异表明，长期运动可能会导致锌和铜的重新分布。
