de Lima Filipe Dinato, Correia Ana Luiza Matias, Teixeira Denilson da Silva, da Silva Neto Domingos Vasco, Fernandes Ítalo Sávio Gonçalves, Viana Mário Boratto Xavier, Petitto Mateus, da Silva Sampaio Rodney Antônio, Chaves Sandro Nobre, Alves Simone Teixeira, Dantas Renata Aparecida Elias, Mota Márcio Rabelo
University of Brasília, Brasília, DF, Brazil ; Universitary Center of Brasília (UniCEUB), Brasília, DF, Brazil.
University of Brasília, Brasília, DF, Brazil.
Int J Gen Med. 2015 Aug 13;8:255-60. doi: 10.2147/IJGM.S87429. eCollection 2015.
The aim of this study was to analyze the acute metabolic response to exercise in fasting and postprandial. For this, ten individuals were submitted to an incremental treadmill test, with an initial speed of 5 and 1 km/h increments every minute, with no inclination, and a body composition assessment. After this 1st day, all volunteers were submitted to two experimental procedures (fasting and postprandial), with an aerobic exercise performed for 36 minutes at 65% of maximal oxygen consumption. At postprandial procedure, all subjects ingested a breakfast containing 59.3 g of carbohydrate (76.73%), 9.97 g of protein (12.90%), 8.01 g of lipids (10.37%), with a total energy intake of 349.17 kcal. An analysis of plasma concentration of triglycerides, lactate, and glucose was performed in two stages: before and after exercise. The Shapiro-Wilk test was used to verify the normality of the data. For analysis of glucose concentration, plasma lactate, and triglycerides, we used a repeated measures analysis of variance factorial 2×2, with Bonferroni multiple comparison test. The significance level of P<0.05 was adopted. The results indicated a maintenance level of glucose at fasting and a decrease in glucose concentration at postprandial exercise. Both conditions increase plasma lactate. Triglycerides also increased in the two experimental conditions; however, after exercise fasting, the increase was significantly higher than in the postprandial exercise. These data suggest that both exercises could increase plasma lactate and triglycerides. However, exercise performed in fasting condition decreases glucose concentration and increases triglycerides, even more than postprandial exercise.
本研究的目的是分析空腹和餐后运动的急性代谢反应。为此，让10名个体进行递增式跑步机测试，初始速度为5公里/小时，每分钟增加1公里/小时，无坡度，并进行身体成分评估。在第一天之后，所有志愿者都接受了两种实验程序（空腹和餐后），进行了36分钟的有氧运动，运动强度为最大耗氧量的65%。在餐后程序中，所有受试者摄入了一份早餐，其中含有59.3克碳水化合物（76.73%）、9.97克蛋白质（12.90%）、8.01克脂质（10.37%），总能量摄入为349.17千卡。在运动前和运动后两个阶段对血浆甘油三酯、乳酸和葡萄糖浓度进行了分析。使用夏皮罗-威尔克检验来验证数据的正态性。对于葡萄糖浓度、血浆乳酸和甘油三酯的分析，我们使用了2×2析因重复测量方差分析，并进行了邦费罗尼多重比较检验。采用P<0.05的显著性水平。结果表明，空腹时葡萄糖维持在一定水平，餐后运动时葡萄糖浓度下降。两种情况下血浆乳酸均增加。在两种实验条件下甘油三酯也都增加；然而，空腹运动后，甘油三酯的增加显著高于餐后运动。这些数据表明，两种运动都可增加血浆乳酸和甘油三酯。然而，空腹状态下进行的运动可降低葡萄糖浓度并增加甘油三酯，且增加幅度甚至超过餐后运动。
