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

研究了大强度运动后进食晚餐的时间对第二天清晨(运动后12h)肌糖原储备和血糖反应的影响。在第一项研究中，11名健康男性在阻力运动(仰卧起坐和半蹲)后以最大重复次数的80%的强度进行了10公里跑，步行50min，共3组。运动后1h内(1P-EX)或运动后3h(3P-EX)进食一顿晚餐(碳水化合物73%，脂肪18%，蛋白质9%；能量百分比)。5名受试者参加了两次不同的训练，其余6名受试者被随机分为1P-EX组和3P-EX组。分别在运动后即刻和12h取股外侧肌进行肌肉活检。1P-EX组和3P-EX组运动后即刻肌糖原含量无显著差异(Mean*SD，1P-EX vs 3P-EX：58.9×11.8vs 58.9×27.3…/kg湿重，n=5；5增加6.4*15.3vs.60.0*25.3 mmol/kg湿重，n=8)。1P-EX运动后12h肌糖原含量显著增加(81.0±20.0 mmol/kg湿重，n=5，p&lt；0.05；84.2×22.6 mmot/kg湿重，n=8，p&lt；0.05)，而3P-ex无显著变化(62.5×24.0 mg/g湿重，n=5；67.3±20.8 mm o l/kg湿重，n=8)。但两组运动后12h肌糖原含量差异无统计学意义(1P-EX与3P-EX：81.0±20.0 vs 62.5±24.0 mg/g湿重，n=5；84.2±22.6 vs 67.3±20.8 mm ol/kg湿重，n=8)。1P-EX与3P-EX的糖原耗尽率有显著差异(1P-EX与3P-EX：2.28±2.0vs.0.30×2.87 mmol/kg湿重/12h，n=5，p&lt；0.05；2.32±2.48vs.0.62×2.30 mm ol/kg湿重/12h，n=8，p&lt；0.1)。这些结果表明，与推迟运动后进食相比，运动后立即进食将更有可能成功恢复储存在肌肉中的糖原。运动后12h，在第二个研究中，7名男性接受与第一个研究相同的运动和饮食计划。分别于餐后0、15、30、60、90min检测第二天早餐后血糖反应。然而，在晚餐的两个时间段之间，血糖反应没有差别。较少

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