Arginine Hydrochloride

As dietary supplements play a crucial role in meeting the unique nutritional needs of soccer players, a growing body of studies are exploring the effects of dietary supplements on athletic performance in soccer players. The effectiveness of certain supplements, such as caffeine and creatine, remains debated due to inconsistent results across studies. Therefore, this systematic review and Bayesian network meta-analysis was conducted to tentatively identify the most effective dietary supplements for soccer players.

We searched PubMed, Web of Science, Cochrane, Embase, and SPORTDiscus from database establishment to 5 February 2024 to identify randomized controlled trials (RCTs) evaluating the effects of different dietary supplements on athletic performance in soccer players. The risk of bias was assessed using the revised Cochrane risk-of-bias tool for randomized trials. A Bayesian network meta-analysis was performed using the R software and Stata 18.0. A subgroup analysis was conducted based on the competitive level of the athletes.

Eighty RCTs were included, with 1,425 soccer players randomly receiving 31 different dietary supplements or placebo. The network meta-analysis showed that compared with placebo, carbohydrate + protein (SMD: 2.2, very large), carbohydrate + electrolyte (SMD: 1.3, large), bovine colostrum (SMD: moderate) and caffeine (SMD: 0.29, small) were associated with a significant effect on increasing the distance covered. Kaempferia parviflora (SMD: 0.46, small) was associated with a significant effect on enhancing muscular strength. Beta-alanine (SMD: 0.83, moderate), melatonin (SMD: 0.75, moderate), caffeine (SMD: 0.37, small), and creatine (SMD: 0.33, small) were associated with a significant effect on enhancing jump height. Magnesium creatine chelate (SMD: -3.0, very large), melatonin (SMD: -1.9, large), creatine + sodium bicarbonate (SMD: -1.4, large), and arginine (SMD: -1.2, moderate) were associated with a significant effect on decreasing sprint time. Creatine + sodium bicarbonate (SMD: -2.3, very large) and caffeine (SMD: -0.38, small) were associated with a significant effect on improving agility. Sodium pyruvate (SMD: 0.50, small) was associated with a significant effect on increasing peak power. Magnesium creatine chelate (SMD: 1.3, large) and sodium pyruvate (SMD: 0.56, small) were associated with a significant effect on increasing mean power. Carbohydrate + electrolyte (SMD: -0.56, small) was associated with a significant effect on improving the rating of perceived exertion.

This study suggests that a range of dietary supplements, including caffeine, creatine, creatine + sodium bicarbonate, magnesium creatine chelate, carbohydrate + electrolyte, carbohydrate + protein, arginine, beta-alanine, bovine colostrum, Kaempferia parviflora, melatonin, and sodium pyruvate, can improve athletic performance in soccer players. This review provides evidence-based guidance for soccer coaches and nutritionists on using dietary supplements to enhance specific performance measures.

There is a need to explore the influence of particle size of sweet potato flour on physicochem. properties and in vitro starch digestibility of gluten free sweet potato noodles.The aim of this work was to examine the influence of purple-fleshed sweet potato flour (PFSPF) having different particle size distribution (355 μm to 75μ m) on physicochem. properties and in vitro starch digestibility of gluten-free purple sweet potato noodles.Pasting properties and sugar contents were pos. correlated toward the finest particle fraction.The hardness of noodles was pos. and significantly correlated to the finest particle size fraction.Sweet potato flour (SPF) noodles prepared with particle size of 75 μm retained lower hardness 5.74 N.An abrupt increase in yellowness was observed with decreasing particle size that might be attributed to the reduction of protein.The results of FTIR suggested that with the reduction of particle size, protein and carbohydrates decreased that much associated with crystallization and retrogradation of starch.Among all the amino acids, aspartic acid and glutamic acid were observed to be more abundant, i.e. approx. 13.33 and 29.05‰, resp.In this way, PFSPF with particle size 75 μm exhibited significant application potential for producing gluten free noodles due to high resistant starch and lower hardness.It may be concluded that particle sizes of sweet potato flour influenced pasting properties, textural characteristics, sugar contents, protein contents, amino acid contents, carbohydrate contents of prepared noodles.