Beta-Alanine Boosts Endurance

Because beta-alanine supplementation has been shown to elevate muscle carnosine content in both trained and untrained subjects, scientists from Ghent University in Belgium wanted to see whether it could enhance the performance of competitive sprinters. Fifteen track and field athletes were divided into two groups: One took 4.8 grams of beta-alanine a day for 4 weeks while the other took a placebo. The beta-alanine supplementing sprinters increased their muscle carnosine content by 47% and were able to maintain a higher average peak torque for isometric knee extensions through a series of tests, although their 400 meter sprint times were not significantly different.

The Bigger Picture: Carnosine works as a pH buffer during muscle contractions, so increasing the level of this dipeptide in muscles while exercising can help you beat fatigue to train longer and harder. That's true whether you're a strength or endurance athlete. With 1.6 grams of beta-alanine per serving, plus L-Histidine and 4 mineral electrolytes, Threshold was designed with serious training in mind.
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