The aminoacidemia resulting from food protein digestion in response to exercise plays an underlying role in the rate of muscle protein synthesis. Whey protein hydrolysate (WPH) has been demonstrated to cause more pronounced postexercise aminoacidemia compared with casein and soy. Although fish protein has been demonstrated to be a great source of amino acids, there is no data available providing information about the postexercise aminoacidemia after fish protein hydrolysate (FPH) intake. The present study investigated the characteristic patterns of postexercise aminoacidemia after WPH and FPH intake in nine physically active subjects (six males and three females). In a crossover, double-blind, and randomized design, all participants received oral doses of either 0.25 g/kg of FPH or WPH or placebo (PLA) immediately after a resistance exercise bout. Blood samples were taken before and at 30, 60, 90, 120 and 180 min after supplementation. There was a significant increase in plasma total amino acids (TAA), essential amino acids (EAA), branched-chain amino acids (BCAA), and leucine concentrations at 30 and 60 min after FPH supplementation, and at 30, 60, 90, and 120 min after WPH as compared to PLA. No significant differences were observed in plasma TAA, EAA, BCAA, and leucine concentrations between FPH and WPH at any time point, and there were no significant difference observed in the area under the curve for TAA, EAA, BCAA, and leucine between FPH and WPH. In conclusion, both FPH and WPH showed a rapid and pronounced postexercise aminoacidemia. FPH presented itself to be an alternative food source of rapidly digested proteins to be used after resistance exercise. PRACTICAL APPLICATION: Fish protein hydrolysate (FPH) demonstrated a rapid and pronounced postexercise aminoacidemia. Whey protein hydrolysate showed similar effects. FPH is presented as an alternative food source of rapidly digested proteins to be consumed by the population, especially physically active individuals.

中文翻译：

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与乳清蛋白水解物相比，摄入鱼蛋白水解物对年轻人运动后氨基酸血症的影响

运动引起的食物蛋白质消化引起的氨基酸血症在肌肉蛋白质合成速率中起着潜在的作用。与酪蛋白和大豆相比，乳清蛋白水解物 (WPH) 已被证明会导致更明显的运动后氨基酸血症。虽然鱼蛋白已被证明是氨基酸的重要来源，但没有可用数据提供有关摄入鱼蛋白水解物 (FPH) 后运动后氨基酸血症的信息。本研究调查了 9 名身体活跃的受试者（6 名男性和 3 名女性）摄入 WPH 和 FPH 后运动后氨基酸血症的特征模式。在交叉、双盲和随机设计中，所有参与者在抗阻运动后立即接受 0.25 g/kg FPH 或 WPH 或安慰剂 (PLA) 的口服剂量。在补充之前和之后 30、60、90、120 和 180 分钟采集血样。血浆总氨基酸 (TAA)、必需氨基酸 (EAA)、支链氨基酸 (BCAA) 和亮氨酸浓度在补充 FPH 后 30 和 60 分钟以及在 30、60、90、与 PLA 相比，WPH 后 120 分钟。在任何时间点 FPH 和 WPH 之间的血浆 TAA、EAA、BCAA 和亮氨酸浓度均未观察到显着差异，并且 FPH 和 WPH 之间的 TAA、EAA、BCAA 和亮氨酸的曲线下面积未观察到显着差异。 WPH。总之，FPH 和 WPH 都表现出快速且明显的运动后氨基酸血症。FPH 本身是一种可在抗阻运动后使用的快速消化蛋白质的替代食物来源。实际应用：鱼蛋白水解物 (FPH) 表现出快速且明显的运动后氨基酸血症。乳清蛋白水解物显示出类似的效果。FPH 被提出作为快速消化蛋白质的替代食物来源，供人群，尤其是身体活跃的人食用。