Water, food of low glycemic index and sports drink were supplemented by cyclists in road train for 4 hours, blood sugar was tested in exercise of 2,3,4 hours and at 2 hours post exercise, BLA and BUN also were tested in different time.

• 自行车运动员进行4h的公路训练,分别服用水、低血糖指数食物和运动饮料,测定运动中2、3、4h和运动后2h的血糖及部分时间点的血乳酸和血尿素。