L-carnitine L-tartrate helps with muscle recovery

In the ongoing quest to produce and test supplements that improve performance and recovery, researchers have discovered another substance that may be of interest to hard training athletes. L-carnitine L-tartrate supplementation seems to decrease the amount of muscle disruption that occurs after high-repetition resistance training and enhance muscle recovery.

Researchers at the University of Connecticut, Storrs, CT, examined the influence of L-carnitine L-tartrate supplementation on markers of catabolism, free radical formation and muscle tissue disruption after squats. Ten resistance-trained men took a placebo or L-carnitine L-tartrate supplement (2 grams/day) for three weeks. Blood samples were taken on six consecutive days; blood was also tested before and after a five-set squat protocol of 15-20 repetitions on the second day of supplementation.

Before training on days three and six, muscle tissue disruption was measured at mid-thigh using magnetic resonance imaging (MRI). The researchers noted that L-carnitine L-tartrate supplementation decreased plasma indicators of muscle breakdown, and the amount of muscle disruption during supplementation was 41%-45% of the placebo area. That means the L-carnitine L-tartrate supplementation somehow protected the muscle tissue from more severe disruption and damage than often occurs under normal circumstances.

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