EFFECT OF THE TIMING OF INGESTION OF AN EVENING MEAL FOLLOWING AN INTENSE BOUT OF EXERCISE ON BLOOD GLUCOSE RESPONSE ON THE NEXT DAY EARLY IN THE MORNING

在第一项研究中，11名健康男性在进行阻力运动（卧推和半深蹲）后，以50分钟配速跑10公里，强度为每次最多重复80%，连续3组。晚餐（73%碳水化合物，18%脂肪，9%蛋白质，能量的百分比）在运动后1小时内（1 P-EX）或运动后3小时（3P-EX）消耗。5名受试者参加了两次不同的场合，其余6名受试者随机分为1 P-EX组和3P-EX组。运动后立即和12小时分别从股外侧肌进行肌肉活检。运动后立即肌糖原含量在1P-EX和3P-EX之间无显著差异（mean*SD, 1P-EX vs. 3P-EX: 58.9*11.8 vs. 58.9*27.3 mmol/kg wet wt, n=5; 5…More 6.4*15.3 vs. 60.0*25.3 mmol/kg wet wt, n=8）。运动后12 h， p - ex组肌肉糖原含量显著增加（81.0*20.0 mmol/kg wet wt, n=5, p<0.05; 84.2*22.6 mmot/kg wet wt, n=8, p<0.05），而p - ex组无显著增加（62.5*24.0 mg/g wet wt, n=5; 67.3*20.8 mmol/kg wet wt, n=8）。然而，两组运动后12 h肌糖原含量无差异（1P-EX vs. 3P-EX: 81.0*20.0 vs. 62.5*24.0 mg/g wet wt, n=5; 84.2*22.6 vs. 67.3*20.8 mmol/kg wet wt, n=8）。1 p - ex与3P-的糖原补充率差异有统计学意义（1 p - ex vs. 3P- ex: 2.28*2.0 vs. 0.30*2.87 mmol/kg wet wt/12h, n=5, p<0.05; 2.32*2.48 vs.0.62*2.30 mmol/kg wet wt/12h, n=8, p<0.1）。这些结果表明，与运动后延迟进食相比，运动后立即进食将更有可能成功恢复肌糖原储存。在第二项研究中，7名男性接受了与第一项研究相同的运动和饮食计划。次日早餐后血糖反应分别于饭后0、15、30、60、90分钟检测。然而，两种晚餐时间的血糖反应没有差异。少

The influence of the time of ingestion of an evening meal following an intense bout of exercise on both muscle glycogen storage and blood glucose response on the next day early in the morning (12 h postexercise) was examined, In the first study, eleven healthy males were subjected to a 10 km run for 50 min pace following resistance exercise (bench press and half squat) at an intensity of 80% of one repetition maximum for 3 sets. An evening meal (73% carbohydrate, 18% fat, 9% protein ; percent of energy) was consumed within 1 h postexercise (1 P-EX) or from 3 h postexercise (3P-EX). Five subjects participated on two separate occasions and the remaining 6 subjects were divided randomly into either 1 P-EX or 3P-EX.Muscle biopsies were taken from the vastus lateralis immediately and 12 h postexercise. Muscle glycogen contents immediately postexercise were not significantly different between the 1 P-EX and the 3P-EX (mean*SD, 1P-EX vs. 3P-EX : 58.9*11.8 vs. 58.9*27.3 mmol/kg wet wt, n=5 ; 5 … More 6.4*15.3 vs. 60.0*25.3 mmol/kg wet wt, n=8). Muscle glycogen contents 12 h postexercise increased significantly in the 1 P-EX (81.0*20.0 mmol/kg wet wt, n=5, p<0.05 ; 84.2*22.6 mmot/kg wet wt, n=8, p<0.05) but not in the 3P-EX (62.5*24.0 mg/g wet wt, n=5 ; 67.3*20.8 mmol/kg wet wt, n=8). However, there was no difference in muscle glycogen contents 12 h postexercise between the two groups (1P-EX vs. 3P-EX : 81.0*20.0 vs. 62.5*24.0 mg/g wet wt, n=5 ; 84.2*22.6 vs. 67.3*20.8 mmol/kg wet wt, n=8). There was significant difference in the rate of glycogen repletion between the 1 P-EX and the 3P- (1 P-EX vs. 3P-EX : 2.28*2.0 vs. 0.30*2.87 mmol/kg wet wt/1 2h, n=5, p<0.05 ; 2.32*2.48 vs.0.62*2.30 mmol/kg wet wt/12h, n=8, p<0.1). These results suggest that compared with delaying the ingestion of a meal postexercise, the immediate ingestion of a meal postexercise will lead to more of a good chance of successful recovery of muscle glycogen store at. 12 h postexercise, In the second study, seven males were subjected to the same exercise and meal program as those in the first study. Blood glucose response following breakfast on the next day was examined at 0, 15, 30, 60, 90 min after meal. However, there was no difference in blood glucose responses between the two timings of an evening meal. Less