作者对19名(Ⅰ组)全年锻炼的少年滑雪运动员和22名(Ⅱ组)不从事运动的少年(年龄均为13～16岁)进行了某些金属酶活性、血液学指标、维生素C(V_c)供给量和工作能力的研究,时间一年。Ⅰ组少年年训练每周3～5次,及10月、1月训练量、竞赛负荷量最大。于7、10、1、5月采空腹静脉血15ml;Ⅰ组少年还在1,500米滑雪竞赛前、后另采血样。结果表明:1.常年系统从事锻炼的少年 The authors studied the activities of some metalloenzyme activities, hematological indexes, vitamin C (n = 18), 19 young skiers (group Ⅰ) and 22 non-exercisers aged 13-16 years (V_c) supply and ability to work, time of year. Group Ⅰ juvenile training 3 to 5 times a week, and October, January training volume, the maximum load of the race. Blood samples of fasting venous blood (15ml) were collected in July, October, January and May. In group I, young children were still taking blood samples before and after the 1,500m ski race. The results show that: 1. Perennial system engaged in exercise