L-carnitine L-tartrate Promotes Muscle Recovery in Middle-Aged Adults
L-carnitine L-tartrate is a popular supplement in some endurance athletes and bodybuilders. L-carnitine is an important chemical found in the mitochondria— the cells’ energy centers— where it helps break down long-chain fatty acids and promotes oxygen consumption. Intense weight training restricts muscle blood flow and oxygen delivery, which interferes with muscle cell function and damages cell membranes. In young adults, L-carnitine L-tartrate supplements reduced chemical damage to tissues after exercise, and promoted muscle tissue repair and recovery.
Several studies found that L-carnitine L-tartrate promoted recovery and prevented free radical tissue damage in intensely training young men. A sophisticated study from the University of Connecticut, Storrs led by Bill Kraemer found similar results in middle-aged men. Muscle deterioration with age is a serious problem that decreases physical performance, quality of life, and can lead to premature death. The study showed that L-carnitine L-tartrate supplements reduced markers of tissue breakdown, free radical formation, and muscle soreness after exercise. However, it had had no effect on physical performance. (Metabolism Clinical and Experimental, 59: 1190-1199, 2010)