The Claim
Twenty-eight days of beta-alanine supplementation at 800 mg four times daily significantly improves lower-body isokinetic exercise performance in female masters athletes aged 40 and older, increasing total work during the final third of leg flexion by 24.0% and average peak torque during extension by 5.4% compared to placebo, with no effect on handgrip strength or body composition.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In women aged 40 and older who are trained athletes, taking 800 mg of beta-alanine four times daily for 28 days increases total work output by 24.0% during the final third of leg flexion and raises average peak torque during leg extension by 5.4% compared to a placebo, without changing handgrip strength or body composition.
See the scientific wording
Twenty-eight days of beta-alanine supplementation at 800 mg four times daily significantly improves lower-body isokinetic exercise performance in female masters athletes aged 40 and older, increasing total work during the final third of leg flexion by 24.0% and average peak torque during extension by 5.4% compared to placebo, with no effect on handgrip strength or body composition, suggesting targeted neuromuscular fatigue resistance in trained older women.
Beta-alanine enters muscle cells and combines with another molecule to form carnosine, which soaks up acid produced during intense leg cycling. This keeps the muscle environment less acidic, allowing the muscle fibers to keep contracting strongly even when tired, especially during the last part of the workout.
What the research says
1 studyThis study found that when older female athletes took beta-alanine pills every day for four weeks, their legs got stronger during intense cycling — they could do 24% more work at the end and produce 5.4% more power — but their hand strength and body fat didn't change. So yes, the supplement helped their legs, but nowhere else.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.