IRCT20190720044283N2 IRCT 2021-09-01 University of Guilan Acute effect of beta-alanine supplementation on anaerobic function and muscle fatigue in female athletes Effects of Acute β-Alanine supplementation on anaerobic performance and muscle fatigue in athletic female 2021-08-23 anticipated 10 Complete https://irct.ir/trial/58031 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Crossover, Purpose: Other, Randomization description: Using the random selection method by Excel software by writing the names of the subjects in cells and then in the other part, we specify the position of the desired groups in two separate sections of 5 subjects. Then in these two sections, we will execute the following code so that they are randomly placed in groups of 5 subjects. =INDEX($A$3:$A$12,RANDBETWEEN(1,ROWS($A$3:$A$12)),1), Blinding description: In this study, one group will take 6 grams of beta-alanine supplement in capsules and the other group will take a placebo containing sucrose. It should be noted that capsules containing supplements or placebos will be coded by a third party who has no conflict of interest in the present study and is present merely as an observer and will distribute it with the knowledge of each individual supplement. 1-2 Prevent depletion of energy resources during physical activity, Reduce or delay muscle fatigue and improve performance, Increase anaerobic power. Intervention 1: Intervention group: Beta-alanine supplementation; The intervention group took 4.5 g of beta-alanine in capsules and the other group took a placebo containing the same amount of sucrose as beta-alanine. One week after the effects of the supplement disappear, in the third session, the two groups of subjects will change in terms of supplementation, and the group that uses the beta-alanine will use a placebo. Intervention 2: Control group: The placebo group consumes 4.5 grams of sucrose in capsules. After one week, in the third session, the two groups of subjects will change in terms of supplementation, and the group that uses the placebo will use beta-alanine. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information.