Casoni I, Guglielmini C, Graziano L, Reali M G, Mazzotta D, Abbasciano V
Centro Ricerche Biomediche applicate allo Sport, Università di Ferrara, Italy.
Int J Sports Med. 1990 Jun;11(3):234-7. doi: 10.1055/s-2007-1024798.
Erythrocitary and serum magnesium (Mg) were determined in a group of 11 well-trained athletes before and after a 25-km running race, and in a group of 30 sedentary controls. The significant increase of mean erythrocitary Mg (EMg) concentration observed in the athletes after physical strain (2.58 +/- 0.34 mEq/l before, 3.10 +/- 0.45 mEq/l after the race: significance level = 5%) leads to the assumption that the possible Mg uptake is effected by the red blood cell to enhance some enzymatic reactions. The decrease of mean serum Mg concentration observed in the same subjects after the effort (1.70 +/- 0.14 mEq/l before, 1.64 +/- 0.15 mEq/l after the race) is not significant. The difference between mean Mg concentrations observed in the athletes' group before the race and in the sedentary group (EMg: 2.58 +/- 0.34 mEq/l in athletes, 3.67 +/- 0.38 mEq/l in sedentaries, significance level = 1%; serum Mg: 1.70 +/- 0.14 mEq/l in athletes, 1.96 +/- 0.15 mEq/l in sedentaries, significance level = 1%) suggests that athletes suffer from a Mg deficiency, partially due to physical exercise. The two hypotheses and the possible causes of the observed phenomena are discussed.
在一组11名训练有素的运动员参加25公里赛跑前后，以及在一组30名久坐不动的对照组中，测定了红细胞和血清镁（Mg）的含量。观察到运动员在体力消耗后平均红细胞镁（EMg）浓度显著增加（赛前为2.58±0.34毫当量/升，赛后为3.10±0.45毫当量/升：显著性水平=5%），这导致人们推测红细胞可能摄取镁以增强某些酶促反应。在同一受试者运动后观察到的平均血清镁浓度下降（赛前为1.70±0.14毫当量/升，赛后为1.64±0.15毫当量/升）并不显著。在赛前观察到的运动员组与久坐组之间的平均镁浓度差异（EMg：运动员为2.58±0.34毫当量/升，久坐者为3.67±0.38毫当量/升，显著性水平=1%；血清镁：运动员为1.70±0.14毫当量/升，久坐者为1.96±0.15毫当量/升，显著性水平=1%）表明运动员存在镁缺乏，部分原因是体育锻炼。讨论了这两种假设以及观察到的现象的可能原因。
