Sports Centre, University of Malaya, Kuala Lumpur, Malaysia.
Int J Sport Nutr Exerc Metab. 2010 Jun;20(3):216-23. doi: 10.1123/ijsnem.20.3.216.
The purpose of the study was to investigate whether a combination of sago and soy protein ingested during moderate-intensity cycling exercise can improve subsequent high-intensity endurance capacity compared with a carbohydrate in the form of sago and with a placebo. The participants were 8 male recreational cyclists with age, weight, and VO2max of 21.5 +/- 1.1 yr, 63.3 +/- 2.4 kg, and 39.9 +/- 1.1 ml . kg(-1) . min(-1), respectively. The design of the study was a randomized, double-blind placebo-controlled crossover comprising 60 min of exercise on a cycle ergometer at 60% VO2max followed by a time-to-exhaustion ride at 90% VO2max. The sago feeding provided 60 g of carbohydrate, and the sago-soy combination provided 52.5 g of carbohydrate and 15 g of protein, both at 20-min intervals during exercise. Times to exhaustion for the placebo, sago, and sago-soy supplementations were 4.09 +/- 1.28, 5.49 +/- 1.20, and 7.53 +/- 2.02 min, respectively. Sago-soy supplementation increased endurance by 84% (44-140%; p < .001) and by 37% (15-63%; p < .05) relative to placebo and sago, respectively. The plasma insulin response was elevated above that with placebo during sago and sago-soy supplementations. The authors conclude that a combination of sago and soy protein can delay fatigue during high-intensity cycling.
这项研究的目的是调查在中等强度的自行车运动中摄入西米和大豆蛋白的混合物是否比单独摄入西米中的碳水化合物或安慰剂能提高随后的高强度耐力能力。参与者是 8 名男性休闲自行车运动员，年龄、体重和最大摄氧量分别为 21.5 +/- 1.1 岁、63.3 +/- 2.4 公斤和 39.9 +/- 1.1 毫升。公斤(-1)。分钟(-1)。该研究的设计是一项随机、双盲、安慰剂对照的交叉研究，包括在自行车测力计上以 60%的最大摄氧量进行 60 分钟的运动，然后以 90%的最大摄氧量进行时间至衰竭的骑行。西米喂养提供 60 克碳水化合物，西米-大豆混合物提供 52.5 克碳水化合物和 15 克蛋白质，在运动期间每隔 20 分钟摄入一次。安慰剂、西米和西米-大豆补充剂的衰竭时间分别为 4.09 +/- 1.28、5.49 +/- 1.20 和 7.53 +/- 2.02 分钟。西米-大豆补充剂使耐力分别提高了 84%（44-140%；p<0.001）和 37%（15-63%；p<0.05），相对于安慰剂和西米。西米和西米-大豆补充剂期间，血浆胰岛素反应高于安慰剂。作者得出结论，西米和大豆蛋白的混合物可以延缓高强度自行车运动中的疲劳。
