Suminski R R, Robertson R J, Goss F L, Arslanian S, Kang J, DaSilva S, Utter A C, Metz K F
Human Performance Laboratory, University of Houston, TX 77204, USA.
Int J Sport Nutr. 1997 Mar;7(1):48-60. doi: 10.1123/ijsn.7.1.48.
Sixteen men completed four trials at random as follows: (Trial A) performance of a single bout of resistance exercise preceded by placebo ingestion (vitamin C); (Trial B) ingestion of 1,500 mg L-arginine and 1,500 mg L-lysine, immediately followed by exercise as in Trial A; (Trial C) ingestion of amino acids as in Trial B and no exercise; (Trial D) placebo ingestion and no exercise. Growth hormone (GH) concentrations were higher at 30, 60, and 90 min during the exercise trials (A and B) compared with the resting trials (C and D) (p < .05). No differences were noted in [GH] between the exercise trials. [GH] was significantly elevated during resting conditions 60 min after amino acid ingestion compared with the placebo trial. It was concluded that ingestion of 1,500 mg arginine and 1,500 mg lysine immediately before resistance exercise does not alter exercise-induced changes in [GH] in young men. However, when the same amino acid mixture is ingested under basal conditions, the acute secretion of GH is increased.
16名男性随机完成了四项试验，具体如下：（试验A）在摄入安慰剂（维生素C）后进行一轮抗阻运动；（试验B）摄入1500毫克L-精氨酸和1500毫克L-赖氨酸，随后立即像试验A那样进行运动；（试验C）像试验B那样摄入氨基酸但不进行运动；（试验D）摄入安慰剂且不进行运动。与静息试验（C和D）相比，运动试验（A和B）期间30、60和90分钟时生长激素（GH）浓度更高（p < 0.05）。运动试验之间的[GH]未观察到差异。与安慰剂试验相比，在摄入氨基酸60分钟后的静息状态下[GH]显著升高。得出的结论是，在抗阻运动前立即摄入1500毫克精氨酸和1500毫克赖氨酸不会改变年轻男性运动诱导的[GH]变化。然而，在基础条件下摄入相同的氨基酸混合物时，GH的急性分泌会增加。
