Effects of beta-alanine supplementation on performance and body composition in collegiate wrestlers and football players
© Kern and Robinson; licensee BioMed Central Ltd. 2009
Published: 31 July 2009
Supplementation with β-alanine has been associated with improved strength, anaerobic endurance, body composition and performance on tests of anaerobic power output following varying training protocols, including high intensity interval training (HIIT) and heavy resistance training. Early season training for collegiate wrestling includes repeated bouts of high intensity exercise with intermittent rest periods; this type of training parallels HIIT from a metabolic standpoint. Collegiate wrestlers also use moderate to high intensity resistance training with high work to rest ratios. In-season football training includes repeated bouts of short sprints and Olympic/power lifting with low work to rest ratios.
Twenty-two Divison II college wrestlers (19.9 ± 1.9 yr, age ± SD) and 15 football players (18.6 ± 1.5 yr) completed this double-blind, placebo controlled study. Each subject ingested either 4 g/day β-alanine or placebo in powdered capsule form. Subjects were tested pre and post 8-week treatment in timed 300 yd. shuttle, 90° flexed arm hang (FAH), body composition, and blood lactate accumulation during 300 yd. shuttle. Wrestlers participated in 5 days per week training that included HIIT 3 days/week and resistance training with high work: rest ratios 2 days/week. Football players participated in 5 days/week training that included repeated sprints with low work: rest ratios 3 times/week and Olympic/power lifting 4 times/week.
Football Placebo (n = 8)
Football Supplement (n = 7)
Wrestling Placebo (n = 12)
Wrestling Supplement (n = 10)
Δ lean mass
Δ 300 shuttle
Δ 90° FAH
Supplementation with beta-alanine appears to have the ability to augment performance and stimulate lean mass accrual in a short amount of time (8 weeks) in previously trained athletes. β-alanine may magnify the expected performance outcomes of training programs with different metabolic demands.
The products were donated by Athletic Edge Nutrition. No other funding was received. The authors declare that they have no competing interests.
This article is published under license to BioMed Central Ltd.