目的 测定不同碳水化合物混合物补充对运动后糖原合成的影响。方法 24 名校运动队长跑运动员自愿参与研究，随机分为3组：A 组；B 组和C 组。实验前对受试者的体成分和饮食进行评价。收集运动前和运动后口服1 g/kg 体重混合物后的血样。混合物为麦芽糊精-葡萄糖-果糖混合物（MGF）、麦芽糊精-葡萄糖（MG）混合物和安慰剂（P）。A 组口服MGF；B 组口服MG；C 组口服P。结果运动后摄入混合物后，在恢复期30min，A 组和B 组血浆葡萄糖水平增加相似。C 组在恢复期内血浆葡萄糖水平维持不变。恢复期中，A 组和B组曲线下面积较高。与C 组相比，A 组和B 组血浆FFA 水平降低，恢复期中变化较小（P<0.05）。结论补充MG 对运动60 min 和90 min 产生不同的餐后血糖模式。补充MGF和MG对运动后产生FFA的应答相似。此外，补充MGF早期，血浆葡萄糖水平降低，但补充MG 没有这样的情况发生。
Abstract: Objective To investigate the effects of different carbohydrate mixtures on glycogen synthesis after exercise. Methods Twenty-four college long-distance runners participated in the study and were randomly divided into three groups: group A; group B and group C. The body composition and diet of the subjects were evaluated before the experiment. Blood samples were taken after oral administration of a 1 g/kg body weight mixture before and after exercise. The mixture was a maltodextrin-glucose-fructose mixture (MGF), a maltodextrin-glucose (MG) mixture and a placebo (P). Group A received oral MGF; Group B received oral MG; Group C received oral placebo.Results After ingestion of the mixture after exercise, the plasma glucose levels in group A and group B increased similarly during the recovery period of 30 min. Plasma glucose levels remained unchanged in group C during the recovery period. During the recovery period, the areas under the curve of Group A and Group B were higher. Compared with group C, plasma FFA levels were lower in group A and group B, and the change in recovery period was smaller (P<0.05). Conclusion Supplemental MG produces different postprandial blood glucose patterns for 60 min and 90 min of exercise. Supplementation of MGF and MG was similar in response to FFA production after exercise.In addition, early in MGF supplementation, plasma glucose levels were reduced, but this did not happen in MG supplementation.
