Abstract
This study examined the acute effects of a one-hour hypertrophic strength training session (STS) on plasma amino acid concentration following oral ingestion of arginine or taurine in nine physically active men participating in a double-blind and randomised experiment. The subjects took placebo, arginine or taurine capsules (50 mg/kg) in either rest (REST) or STS condition. Blood samples were taken before and at 30, 60, 90, and 120 min after the beginning of the treatment and assayed for plasma amino acids with HPLC. There was a significant interaction effect with STS and sample time for both arginine and taurine in the raw data (p < 0.05). The modelled polynomial data for the arginine treatment showed that the peak concentration of arginine occurred at 69 min at rest and at 104 min in STS, and for the taurine treatment, the peak concentration of taurine occurred at 89 min at rest and at 112 min in STS. In conclusion, one hour of hypertrophic STS slows the increase in the peak concentration of plasma arginine and taurine after oral ingestion of the respective amino acids.
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