Carnitine plays a key role in muscle glycogen metabolism, ATP production, muscle tissue repair and even free radical scavenging. Supplementation with carnitine before exercise can increase muscle glycogen storage and improve ATP production, which improves strength and delays fatigue.
Beta-alanine has the ability to buffer acidic waste product in muscle during intense exercise. When beta-alanine is used as a supplement, it’s taken up by your muscles, and together with histidine, is resynthesized into carnosine by an enzyme called carnosine synthetase. An increase in intramuscular carnosine levels can increase the buffering capacity of a muscle by up to 20 percent and result in a dramatic delay in muscle fatigue and considerable improvements in strength and endurance.