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Phosphatidylserine Improves Performance

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Written by SuperHuman
Wednesday, 12 March 2008
Phosphatidylserine (PS) is a fatty chemical (phospholipid) found in cell membranes and is made mainly from soybeans. The supplement reduces the cortisol response to exercise. Cortisol reduces protein synthesis during recovery and may decrease endurance capacity. PS supplements might assist in the adaptation to exercise training, prevent overtraining and influence other hormones, such as testosterone, that affect fitness. Researchers from the United Kingdom found that endurance capacity increased in men who took PS supplements for 10 days (750 milligrams per day). The subjects did not show a decrease in cortisol levels, so the mechanism behind the improved exercise capacity is unknown. PS may be a beneficial supplement for endurance athletes. However, the cost of taking the dosage used in this study might be excessive for most. (Med & Sci in Spts & Exer, 38: 64-71, 2006)

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