A number of pre-workout products include beta-alanine and this non-essential amino acid is also available as a powder. The supplement has been shown to help enhance exercise performance, and a study published in Journal of the International Society of Sports Nutrition suggests it might have potential strength and power training.
Thirty healthy subjects with weight room experience consumed 800 mg of beta-alanine 8 times a day at intervals of at least 1.5 hours for 5 weeks. Some got a placebo. All trained 3 days a week doing a 3-set circuit of back squat, barbell step ups and loaded jumping lunges. There was 40 seconds of work with 120 seconds of between sets rest the first week.
By the fifth week, volume had increased to 5 sets with 20 seconds of work and 60 seconds of between sets rest. Improvements were significantly greater for the beta-alanine group, with average power at one rep max increasing by 43% compared to 21% for placebo. Maximal strength gain averaged 51 lbs. for the beta-alanine group versus 35 lbs. for placebo.