The Effect of Glutamine and Maltodextrin Acute Supplementation on Anaerobic Power

The aim of this study was to investigate whether supplementation of carbohydrate together with peptide glutamine would prevent anaerobic power decrease during repeated competitions. Twenty-eight physical education male students voluntarily participated in the study. Subjects were randomly divided on a Maximal power (Max power) output value basis to four groups: 1) G group (Oral ingestion of glutamine at the dose of 0.25 g/kg body mass in 250 ml of water), 2) M group (A single carbohydrate at a concentration of 50g of maltodextrin in 250 ml of water), 3) GM group (Carbohydrate at a concentration of 50g of maltodextrin + Glutamine at the dose of 0.25 g/kg body mass in 250 ml of water) and, 4) P group (Just 250 ml of water and 30 gram sweetener). Each subject performed three times Running-based Anaerobic Sprint Test (RAST) with intervals of 1 hour. Max power, Minimal power (Min power) and Fatigue index were calculated for each participant. There was a significant decrease in Max and Min power in P group in time series (P< 0.05). Furthermore, regarding the Max and Min power, there was significant difference between P and GM group in third bout indicating stronger influence of combination of maltodextin and glutamine in comparison with pure consumption of glutamine and maltodextrin (P< 0.05). It seems acute supplementation of glutamine and maltodextrin combination, 2 hours before exercise is more efficient in storing glycogen than consumption of a pure carbohydrate or glutamine and consequently prevents decline of anaerobic power in repeated bouts of RAST protocol better than pure maltodextrin or glutamine.