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Alimentation sportive

Beta-alanine

Amino acid improving short, intense exercise performance by regulating muscle acidity.

Definition

Non-essential amino acid that increases muscle carnosine levels, a potent intracellular pH regulator during anaerobic intense efforts.

How it works

Beta-alanine accumulates in muscles to form carnosine, which neutralizes lactate acid and proton accumulation causing muscle fatigue. It is particularly effective for efforts between 1 and 10 minutes, typical of sprint, HIIT, and heavy weightlifting. Supplementation increases muscle carnosine levels after 4-6 weeks of supplementation. Performance improvement is 2-5% on average. A common side effect is paresthesia (tingling skin sensation), harmless. It is not essential if the diet is well-balanced.

Role

Raising the muscles' ability to tolerate acidity and maintain performance during repeated intense efforts.

Examples

  • Beta-alanine powder
  • Beta-alanine capsules
  • Red meat (natural source)
  • Fish

Recommendations

Take 3-5 g daily of beta-alanine for 4-6 weeks to see effects. Divide doses (1.6 g x 2) to minimize tingling. Accompany with intense sessions to maximize benefits.

Key takeaway

Beta-alanine improves short, intense exercise performance by increasing muscle acid tolerance.

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