The effect of beta-alanine supplementation and exhaustive activity on carnosine levels, pH, blood lactate and muscle strength of male judo athletes
Subject Areas : Sport Nutrition
Reza Behdari
1
*
,
Ahmad Abdolmaleki
2
1 - Department of Physical Education and Sport Sciences, West Tehran Branch, Islamic Azad University, Tehran, Iran.
2 - Department of Physical Education and Sport Sciences, East Tehran Branch, Islamic Azad University, Tehran, Iran.
Keywords: Exhaustive training, beta-alanine, male judokas, lactate, carnosine,
Abstract :
Background: Beta-alanine supplementation is a precursor to carnosine, which increases intramuscular carnosine, and the buffering effect may reduce lactic acid accumulation and improve performance. This study investigated the effect of beta-alanine supplementation during exhaustive exercise on carnosine levels, pH, blood lactate, and muscle strength in male judoka athletes.
Materials and Methods: 20 judo athletes (mean age 23.26 ± 3.07, body mass index 23.12 ± 2.05) were purposively selected based on inclusion and exclusion criteria, and then the subjects were randomly divided into two groups of 10 people consuming beta-alanine and a placebo group. Performance testing and blood tests were performed before and after exhausting activity (chest press and leg press) with an intensity of 70 to 75% of 1RM in three sets until exhaustion in both groups. The day after the pre-test, supplementation and placebo were started at 6 grams per day at specified hours for 4 weeks, and the post-tests were re-evaluated after the end of the period. A statistical method was used via SPSS21 software. The Shapiro-Wilk test and covariance analysis with a significance level of 0.05 were used to analyze the data.
Results: There was no significant difference between the two groups of beta-alanine and placebo supplementation in performance indicators (P>0/05).
Conclusion: Co Finally, the results of the study showed that beta-alanine supplementation during the study period improved carnosine levels and reduced blood lactate levels after exhaustive exercise, and may have long-term beneficial effects on performance in professional male judokas.