对１１名男子柔道运动员进行了大运动量训练课前、后血清离子浓度的测定，并观察运动训练对运动员血清离子浓度的影响．结果表明，男子柔道运动员大运动量训练课前血清钾、钠、钙、镁浓度均在普通人正常值范围或高于正常值，而训练后即刻血清镁明显降低，血清钾也减少，训练后２４ｈ血清钾、镁仍低于训练前水平，但血清钠和钙变化不明显． Eleven men’s judo athletes were tested for serum ion concentrations before and after exercise, and the effects of exercise training on serum ion concentrations of athletes were observed. The results showed that the serum potassium, sodium, calcium and magnesium concentrations were all higher than normal in the normal range before training, and the serum magnesium was decreased immediately after training. The serum potassium also decreased at 24 h after training Serum potassium, magnesium is still lower than the pre-training level, but serum sodium and calcium did not change significantly.